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JEE Main Mathematics Syllabus 2021 - Topics, Weightage, Books, Score Maximization and Preparation Tips

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Karishma Khatri

Exams Prep. Master | Updated On - Apr 29, 2021

JEE Main Mathematics Syllabus is common for all the 3 papers i.e. B.E/ B. Tech paper, B. Arch and B. Planning Paper. The syllabus for mathematics is a combination of relatively easy and difficult topics. Systematic approach as per topic weightage, towards the most important section of JEE Main 2021 can open the gates of top engineering institutes of the country. Check JEE Main 2021 Exam Pattern

As per a majority of test takers 25% of the questions are easy, 25% difficult and the rest 50% are observed to be of a medium difficulty level. We have covered a range of aspects in order to assist candidates when dealing with JEE Main Mathematics Syllabus. Read the article for Unit wise syllabus of mathematics, topic wise weightage, mathematics score maximization and question-solving tips. 

Latest Updates

  • April 20, 2021: JEE Main Mathematics Question Papers for previous years available. Download Here
  • April 18, 2021: JEE Main April Session Postponed, new dates yet to be released by NTA. Read More

Unit-wise Syllabus

JEE Main Mathematics Unit-wise Syllabus by NTA

JEE Main 2021 Mathematics syllabus is spread over 16 units.

Unit Number Topic Sub-topics
1. Sets, Relations, and Functions Sets and their representation; Union, intersection, and complement of sets and their algebraic properties; Powerset; Relation, Types of relations, equivalence relations; Functions; one-one, into and onto functions, the composition of functions.
2. Complex Numbers and Quadratic Equations Complex numbers as ordered pairs of reals. Representation of complex numbers in the form (a+ib) and their representation in a plane, Argand diagram; Algebra of complex numbers, modulus and argument (or amplitude) of a complex number, square root of a complex number. Triangle inequality; Quadratic equations in real and complex number systems and their solutions; The relation between roots and coefficients, nature of roots, the formation of quadratic equations with given roots.
3. Matrices and Determinants Matrices: Algebra of matrices, types of matrices, and matrices of order two and three; Determinants: Properties of determinants, evaluation of determinants, the area of triangles using determinants; Adjoint and evaluation of inverse of a square matrix using determinants and elementary transformations; Test of consistency and solution of simultaneous linear equations in two or three variables using determinants and matrices.
4. Permutations and Combinations The fundamental principle of counting; Permutation as an arrangement and combination as selection; The meaning of P (n,r) and C (n,r). Simple applications.
5. Mathematical Induction The principle of Mathematical Induction and its simple applications.
6. Binomial Theorem Binomial theorem for a positive integral index; General term and middle term; Properties of Binomial coefficients and simple applications.
7. Sequence and Series Arithmetic and Geometric progressions, insertion of arithmetic; Geometric means between two given numbers; The relation between A.M. and G.M; Sum up to n terms of special series: Sn, Sn2, Sn3; Arithmetic Geometric progression.
8. Limit, Continuity and Differentiability Real-valued functions, algebra of functions, polynomials, rational, trigonometric, logarithmic and exponential functions, inverse functions; Graphs of simple functions; Limits, continuity, and differentiability. Differentiation of the sum, difference, product, and quotient of two functions; Differentiation of trigonometric, inverse trigonometric, logarithmic, exponential, composite and implicit functions; derivatives of order up to two; Rolle’s and Lagrange’s Mean Value Theorems; Applications of derivatives: Rate of change of quantities, monotonic increasing and decreasing functions, Maxima, and minima of functions of one variable, tangents, and normals.
9. Integral Calculus Integral as an antiderivative; Fundamental integrals involving algebraic, trigonometric, exponential and logarithmic functions; Integration by substitution, by parts, and by partial fractions; Integration using trigonometric identities. Integral as limit of a sum; Evaluation of simple integrals; Fundamental Theorem of Calculus; Properties of definite integrals, evaluation of definite integrals, determining areas of the regions bounded by simple curves in standard form.
10. Differential Equations Ordinary differential equations, their order, and degree; Formation of differential equations; The solution of differential equations by the method of separation of variables; The solution of homogeneous and linear differential equations.
11. Coordinate Geometry Cartesian system of rectangular coordinates in a plane, distance formula, section formula, locus and its equation, translation of axes, the slope of a line, parallel and perpendicular lines, intercepts of a line on the coordinate axes; Straight lines: Various forms of equations of a line, intersection of lines, angles between two lines, conditions for concurrence of three lines; Distance of a point from a line, equations of internal and external bisectors of angles between two lines, coordinates of the centroid, orthocentre, and circumcentre of a triangle, equation of the family of lines passing through the point of intersection of two lines; Circles, conic sections: Standard form of equation of a circle, general form of the equation of a circle, its radius and centre, equation of a circle when the endpoints of a diameter are given, points of intersection of a line and a circle with the centre at the origin and condition for a line to be tangent to a circle, equation of the tangent; Sections of cones, equations of conic sections (parabola, ellipse, and hyperbola) in standard forms, condition for y = mx + c to be a tangent and point (s) of tangency.
12. 3D Geometry Coordinates of a point in space, the distance between two points; Section formula, direction ratios and direction cosines, the angle between two intersecting lines; Skew lines, the shortest distance between them and its equation; Equations of a line and a plane in different forms, the intersection of a line and a plane, coplanar lines.
13. Vector Algebra Scalars and Vectors. Addition, subtraction, multiplication and division of vectors; Vector’s Components in 2D and 3D space; Scalar products and vector products, triple products.
14. Statistics and Probability Measures of Dispersion: Calculation of mean, mode, median, variance, standard deviation, and mean deviation of ungrouped and grouped data; Probability: Probability of events, multiplication theorems, addition theorems, Bayes theorem, Bernoulli trials, Binomial distribution and probability distribution.
15. Trigonometry Identities of Trigonometry and Trigonometric equations; Functions of Trigonometry; Properties of Inverse trigonometric functions. Problems on Heights and Distances.
16. Mathematical Reasoning Statements and logical operations: or, and, implied by, implies, only if and if; Understanding of contradiction, tautology, contrapositive and converse.

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Topic-wise Weightage

Topic - wise Weightage for Mathematics in JEE Main 2021 Syllabus

As per the previous year trends, here is the topic wise weightage for JEE Main mathematics:

JEE Main Mathematics Topics Weightage
Coordinate Geometry 17%
Differential Calculus 17%
Integral Calculus 14%
Matrices and Determinants 7%
Sequence and Series 7%
Trigonometry 7%
Quadratic Equation 3%
Probability 3%
Permutation and Combination 3%
Mathematical Reasoning 3%
Statistics 3%
Algebra 3%
Binomial Theorem 3%
Complex Numbers 3%

Maximize Your Score

Maximize Your Score in JEE Main 2021 Mathematics

  • Prioritize Calculus and Algebra: Since these two topics contribute a major portion of JEE Main Mathematics Question Paper, candidates must be through with them by practice and any sort of doubt clarification.
    • Algebra is one of the easiest and most scoring bits of JEE Main mathematics syllabus. All candidates need to deal with this section is clarity on basics and computational speed. Algebra questions are mostly clubbed with other units and therefore covering algebra will assist in the preparation of the rest. 
    • Calculus is among the largest sections of modern mathematics, it has two main sections - Differential and Integral Calculus. Questions can be asked in both ways i.e. based on theory and applications. 
  • Tackling Coordinate Geometry: Considering that most of the questions from this topic are formula based, it can come across as the easiest section for some. However, one must not take this section lightly, a lot of practise is required to avoid silly mistakes in this topic.
  • Study all Formulae and Prepare a list: A strong hold on formulae in mathematics is a major advantage in the exam. Candidates must make sure that they have a clarity on all formulas in geometry, trigonometry, probability and of course calculus. During the preparation period, they can keep making a list of formulas for the time of revision.
  • Application of concepts: Candidates should revise the applications of geometry and differential equations. This applies for properties of definite integrals and results of algebraic calculations of properties of conics. Thorough revision of these applications should be done before JEE Main exam day. 
  • Previous year question papers and mock tests: Before you plan your preparation, a look at previous year question papers and mock tests will help your plan move in the right direction. 
  • Accurate Reference Material: Before you start with your preparation, make sure the reference material you are using is accurate. Also don’t focus on covering all the books, you should have enough material for clarification of concepts and practice.
  • Early on Revision: Most often than not candidates wait to cover the entire syllabus and then start revising. However, with a subject like mathematics, to keep your hold on concepts fresh, you must revise at regular intervals. This will also save your time when you sit for complete rounds of revision. So while making a preparation plan candidates must allow sufficient time for revision. 

Tips by IITians & Experts

Topic-wise Tips by IITians and Experts for JEE Main Mathematics

We have gathered some valuable inputs by IITians for the preparation of some JEE Main mathematics topics:

Complex Numbers and Quadratic Equations

  • The complex numbers and quadratic equations is an important chapter not only just at the school level but any phase of one's technical life. If we talk about JEE Main 2021 syllabus then from the last three to four years one question has been asked from both complex numbers and quadratic equations each.
  • Maths is all about practice but there has to be a strategy to prepare for exams. The first thing you need to do is to go through the theory first from a standard book and practice the solved examples to get a hang of the topic.
  • When you are comfortable enough with the basic questions, you can check the previous year's question of the complex number and quadratic equation of whichever exam you are aiming for, whether it be school or JEE Main.
  • Now comes the practice, pick a question bank book, and keep practicing until you can nail all types of questions that can be formed from these chapters. You can also enroll in all India test series to check your stand against your competitors in case you are preparing for competitive exams.
  • If you are preparing for school exams, “I suggest you practice questions at home with a timer. But don't overdo it. If you can solve 10 questions from Complex number and quadratic equations each day, it is enough, as you have other subjects to study too.” 

Here are some basic sample questions from Complex Numbers and quadratic equations

  • (x + yi) / i = ( 7 + 9i ) , where x and y are real, what is the value of (x + yi)(x - yi)?
  • Determine all complex number z that satisfy the equation: z + 3z' = 5 - 6i, where z' is the complex conjugate of z
  • How many real roots does the equation have? : x^2 + 3x + 4 = 0
  • Evaluate 1/(i^78)

Best books for preparing complex numbers and quadratic equations are:

  • NCERT- First complete this for school purpose
  • RD Sharma- After NCERT solve all questions of this book whether you are IIT aspirant or not
  • Now coming to JEE Main preparation, for this you need some high-level books like ML Khanna, A Dasgupta, Arihant Series, and so on.
  • Keep practicing previous years' papers.

Coordinate Geometry

  • Coordinate geometry comes in the category of one of those topics where you could score marks quite easily, given the condition enough practice of questions is done. 
  • This is really an encouraging topic, where you can simply solve a question just by drawing a rough figure. 
  • Unlike other topics such as calculus or combinatorics where you have to think and do, coordinate geometry is a practical section in which you could actually "see'' what is happening. JEE Main syllabus comprises dealing only with cartesian coordinates, although a little introduction related to polar coordinates is also included.
  • A detailed and to the point syllabus for this topic is: Straight lines,pair of straight lines,various forms of straight lines, intersection of lines and angles between two lines, conditions for the concurrence of three lines, distance of a point from line, bisectors;conic sections, conditions for the standard conic equation to be specific conics such as parabola, hyperbola, ellipse, circle,  equation of tangents and normals to conic sections, different forms of equations of these conics, different forms of equations of tangents and normals, parametric forms of equations.
  • On an average, in JEE Main expected number of questions ranges from 4 to 6 from this topic.
  • JEE Main 2019 question paper included a total of 4 questions from coordinate geometry out of the 16 questions which were asked from various topics of class 11th syllabus. (25 % weightage of 11th syllabus and 13.33% overall)
  • On an average in JEE Advanced the expected no. of questions from this topic is 6 to 7 ( Both paper 1 & 2 combined) of an easy to moderate difficulty level.

Best books for preparing Coordinate Geometry are:

  • SK Goyal has some interesting and advanced level questions.The book starts from a basic level and gradually takes you up to the advanced level. Some corollary to the important theorems are also provided which could be really handy in JEE Advanced. Tons of solved examples are present, which could prove to be really helpful to understand some tricky concepts.
  • Some other authors/publications that can be followed are SL Loney, Cengage, Balaji and Disha.
  • SK Goyal is recommended apart from solving NCERT questions for boards. Previous year JEE Main and Advanced questions are strongly recommended.

Solve NCERT thoroughly in case you have your board exams. Also solve previous years question papers of your respective board. For JEE Main and JEE Advanced, solve previous years question papers apart from solving SK Goyal or any book which suits you. Proceed to give some tests based on the topic to strengthen and clarify your concepts further. Revision here is key for this topic because of a number of equations, so keep revising.

Some of the frequently asked questions related to the topic are:

Ques. The locus of the point of intersection of the lines xcost+(1-cost)y=asint and xsint-(1+cost)y+asint=0 is 

1) x2-y2=a2         3)  y2 = ax

2)x2+y2=a2        4) x2 = ay

Ans. Rearranging the above equations, we get 

1-cost/sint=a-x/y      and     1+cost/sint=a+x/y

multiplying the above equations ,we get x2+y2=a2    

Ques. Lines ax+by+c=0, where 3a+2b+4c=0 & a,b,c all belong to the set of real numbers that are concurrent at the point?

1) (3,2)                  3) (3,4) 

2) (2,4)                  4) (3/4, 1/2)

Ans. We know that,

3a+2b+4c =0

which equals (3/4)a+(1/2)b+c=0

So, the line passes through (3/4,1/2).

Ques. If the area of the triangle formed by the equation  8x2-6xy+y2=0 and the line 2x+3y=a is 7 then the value of a is ?

1) 14                        3) 7

2) 28                        4) 17

Ans. Equation of the sides of the given triangle are y=2x, y=4x and 2x+3y=a

So, vertices of the triangle are (a/8,a/4);(a/14,2a/7) and (0,0)

By determinant method, the area of triangle formed by these coordinates comes out to be a2/112 which is equal to 7

This gives the value of a as 28.

Ques. If the line x=k; k= 1,2,3,.....,n meet the line y=3x+4 at the points Ak(xk,yk), k= 1,2,3.....,n then the ordinate of the centre of the mean position of points Ak, k= 1,2,3,.....,n  is

1) n+1/2                 3) 3(n+1)/2

2) 3n+11/2            4) none of the above

Ans. We have yk=3k+4, the ordinate of intersection of x=k and y=3x+4 . So the ordinate of the mean position of the points Ak k= 1,2,3,.....,n is

(1/n){sum of all yk's} which comes out to be 3n+11/2

Ques. If the point (3,4) lies on the locus of the point of intersection of the lines xcost+ysint =a and xsint-ycost=b, the point (a,b) lies on the line 3x-4y=0 then |a+b|=?

1)  1                             3) 7

2) 3                              4) 12

Ans. Squaring and adding the given equations of the lines we get 

x2+y2=a2+b2 as the locus of the point of intersection of these lines. 

Since (3,4) lies on the locus we get 


Also (a,b) lies on 3x-4y=0 so 3a-4b=0

Solving the two equation for a and b , we get |a+b|= 7

Ques. Equation of the circle with centre (-4,3) touching internally and containing the circle x2+y2=1is

1) x2+y2+8x-6y+9=0                        3) x2+y2-8x+6y+9=0

2)x2+y2+8x-6y+11=0                      4) x2+y2-8x+6y-11=0

Ans. Let the equation of the required circle be (x+4)2+(y-3)2=r2

If the above circle touches the circle x2+y2=1 internally, then the distance between the centres of the circles is equal to the difference of their radii


Which implies r=6

So the equation of the circle is x2+y2+8x-6y-11=0

Ques. If the normal chord at a point ‘t’ on the parabola y2=4axsubtends a right angle at the vertex, then the value of t is

1)4                   3) 3

2)1                   4) 2

Ans. Equation of the normal at ‘t’ to the parabola y2=4ax is y= -tx+2at+at3

The joint equation of the lines joining the vertex to the points of the intersection of parabola and the normal is 



Since, these lines are at right angles so coefficient of x2+y2=0

So, t comes out to be 2.

Vectors and 3D geometry

  • This topic closely resembles coordinate geometry. All the concepts from the basic coordinate geometry are exactly mirrored here except for the fact that, in 3D geometry there is an additional room for a third coordinate which is the ‘z coordinate’. 
  • The topic rather tests your ability to actually see and imagine the problem, rather a mental picture of the problem is necessary. 
  • It covers some of the 3D structures such as tetrahedron, parallelepiped and a sphere too.
  • Unlike in coordinate geometry, where all of the calculations are based on two coordinates viz x and y, a new concept where unit vectors namely i, j and k are required to represent a coordinate in 3D geometry.
  • JEE Main has recently scaled up the number of questions related to this topic, but scoring marks here is easy. Although, at first it takes some time to get acquainted with the third coordinate, once the concept is clear, solving 3D geometry questions becomes a routine task.
  • In JEE Main expected number of questions from 3D geometry and vectors hovers somewhere around roughly 4 to 5 questions. (According to the previous years’ trends). Looking at the previous years’ JEE Main paper, on an average a total 16 questions were asked from 12th syllabus, out of which 4 were from this topic (25% weightage in 12th syllabus and 13.3% weightage overall).
  • Topics covered under these units in JEE syllabus are – 3D geometry: Coordinates of a point in space, distance between two points, section formula, direction ratios and direction cosines, angle between two intersecting lines, Skew lines, the shortest distance between them and its equation, Equations of a line and a plane in different forms, intersection of a line and a plane, coplanar lines,tetrahedron, parallelepiped,sphere; Vectors and vector algebra  –  Vector addition, the component of vectors in two dimensional and three-dimensional space, scalar and vector products, scalar and vector triple product In vectors and vector algebra JEE asks questions based on triple products mostly
  • In JEE Advanced syllabus, the expected number of questions from these topics vary a lot from year to year. JEE Advanced mostly asks around 40% to 50% questions from the 12th syllabus, of which you can expect around 15 to 20 percent questions from these topics which amounts to approximately 4 questions.

Best books for preparing Vectors and 3D Geometry are:

  • For this topic solving previous year JEE Main question papers are strongly recommended. They have all types of questions of 3-D geometry and are enough to test acquired knowledge.
  • Apart from this, Vector and 3D geometry for JEE Main and Advanced by Amit M Agarwal is a great book owing to a variety of questions and solved examples.

Some Frequently Asked Questions related to the above topics are:

Ques. The angle between a diagonal of a cube and one of its edges is,

1) cos-1(1/3)         3) /3

2) /4                       4) /6

Ans. Let a= a1i, b=a1j ,c=a1k.

Then the vector d= a1(i+j+k) is a diagonal of the cube. The angle between one of the edges a, b or c and the diagonal d is given by,

cos=a.d/|a||d| which comes out to be cos-1(1/3).

Ques. Volume of the tetrahedron with vertices P(-1,2,0) ; Q(2,1,-3) ; R(1,0,1) and S (3,-2,3) is 

1)    1/3                          3) 1/4

2)          2/3                    4) ¾

Ans. Volume of the tetrahedron is given by a scalar triple product,

Volume of tetrahedron= ⅙|PQ.(PR x PS)|

Here PQ, PR and PS are three vectors made from the above provided coordinates.

So, the volume of the tetrahedron comes out to be ⅔ after solving the triple product.

Ques. If A,B,C and D are four points in space and |ABxCD+BCxAD+CAxBD|=(area of triangle ABC). Then the value of is-

1) 1              3) 3

 2) 2              4) 4

Ans. Let D be the origin of reference and DA=a, DB= b, DC= c 

So, |ABxCD+BCxAD+CAxBD|= |(b-a) x (-c) +(c-b) x (-a) + (a-c) x (-b)|

= 2|axb+bxc+cxa|

=2(2 area of ABC)

Hence equals 4

Ques. A unit tangent vector at t=2 on the curve x=t2+2,y=4t3-5,z=2t2-6t is?

Ans. The position vector of any point at t is r=(t2+2)i+(4t3-5)j+(2t2-6t) k


At t=2, the above comes out to be  4i+48j+2k, and the unit vector comes out to be (1/580) 2i+24j+k

Ques. Let N be the foot of the perpendicular of length p from the origin to a plane and l,m,n be the direction cosines of ON, the equation of the plane is 

1) px+my+nz=l               3) lx+my+pz=n

2) lx+py+nz =m              4) lx+my+nz=p

Ans. The coordinates of N are (pl,pm,pn) and let P(x,y,z) be any point on the plane. The direction cosines of PN are proportional to x-pl, y-pm and z-pm. Since ON is perpendicular to the plane,  it is perp. To PN 

Hence, l(x-pl)+m(y-pm)+n(z-pm)=0

lx+my+nz=p(l2+m2+n2)=p, which is the locus of P and is the require equation of the plane.

Ques. The image of the point (-1,3,4) in the plane x-2y = 0 is 

1) 8,4,4                    3) 15,11,4

2) 9/5, -13/5,4       4) 4,4,1

Ans.  Required image of the line lies on the line through A(-1,3,4) and perpendicular to x-2y=0 that is on the line

x+1/1 = y-3/-2 = z-4/ 0 =t (say)

So, the coordinates of the image is (t-1,-2t+3,4)

            This point also lies on the plane, so t comes out to be 14/5

           So, the required image is (9/5, -13/5,4).

Ques. If (2,3,5) is one end of the diameter of the spherex2+y2+z2-6x-12y-2z+20=0 then the coordinates of the other end are

1) 4,9,-3                3) 4,3,3

2) 4,-3,3                4) 4,3,5

Ans. Let the other end of the diameter be (a,b,c) , then the equation of the sphere is (x-2)(x-a)+(y-3)(y-b)+(z-5)(z-c)=0

Which equals x2+y2+z2-(2+a)x-(3+b)y-(5+c)z+2a+3b+5c=0

Comparing the above equations of the sphere with the equation given and comparing the corresponding terms we get,

The required coordinates as (4,9,-3).

Statistics and Probability

  • Probability, a popular topic in IIT JEE Mathematics syllabus and a nightmare for many! Sometimes this chapter even challenges the brightest student’s patience and aptitude. Probability is a bit of a different topic than others such as Calculus, Trigonometry or Coordinate Geometry since Probability focuses more on the logical understanding and imagination of an individual. Rather than memory, calculation, solving equations etc.
  • Statistics is not included in JEE Advanced, but it’s included in the JEE Main Syllabus and it’s very easy to score 100% in questions from Statistics. Moreover Statistics, unlike other topics, doesn’t need more time to master. Variance and Standard Deviations are usually asked, so formulas of Variance and Standard Deviation must be on tips.
  • Probability finds a good place in JEE Advanced as well as JEE Main Papers and questions from the same are seen every year. Generally, JEE Advanced has 2-3 Questions from Probability which comprises 6-7% of Paper. While JEE Main comprises 9-10% of Questions from Statistics and Probability. 
  • In recent years Questions from Probability generally come in the form of Paragraphs that usually includes Bayes Theorem, Total Probability, and Binomial Distribution, hence Special Attention needs to be given to these topics.
  • The key to mastering probability lies not just in rigorous and repetitive practice but it is also imperative to get the fundamentals strong. Before beginning with Probability, the knowledge of Permutation and Combinations & Sets is essential.
  • Concepts such as Principle of Counting, Combinations, Group Formation, Selection among r elements, Venn Diagram are widely used while dealing with Probability Questions. Hence before beginning with Probability make sure to clear your concepts of PnC otherwise you’ll get bowled out.  

Best Reference Books for preparing JEE Main Probability and Statistics:

  • NCERT and NCERT Exemplar
  • Mathematics for JEE Advanced Algebra Cengage Algebra by G..Tewani
  • Skills in Mathematics for JEE Mains and Advanced Algebra by S.K Goyal
  • Problem Plus in Mathematics by A Das Gupta
  • Previous Year JEE Question Papers

Some Important Questions which you must have a look at:

Example 1: Four Persons independently solve a certain problem correctly with probabilities ½, ¾, ¼ and 1/8. Then the probability that the problem is solved correctly by at least one of them. [JEE Advanced 2013]

Solution: P(Problem solved by at least one of them)=1-P(Problem solved none of them)




Example 2: An unbiased coin is tossed. If the result is head, a pair of unbiased dice is rolled, and the number obtained by adding the number on the two faces are noted. If the result is a tail, a card from a well-shuffled pack of 11 cards numbered 2, 3, 4....  .., 12 is picked & the number on the card is noted. What is the probability that the number noted is 7 or 8?

Solution: Let us define the events:

    A : head appears.

    B : Tail appears

    C : 7 or 8 is noted.

We have to find the probability of C i.e. P (C)

P(C) = P(A) P (C/A) + P(B) P(C/B)

Now we calculate each of the constituents one by one P(A) = probability of appearing head=½ 

P(C/A) = Probability that event C takes place i.e. 7 or 8 being noted when head has already appeared. (If something has already happened then it becomes certain, i.e. now it is certain that head has appeared we have to certainly roll a pair of unbiased dice).

            = 11/36 (since (6, 1) (1, 6) (5, 2) (2, 5) (3, 4) (4, 3) (6, 2) (2, 6) (3, 5) (5, 3) (4, 4) i.e.                              11 favorable cases and of course 6 × 6 = 36 total number of cases)

 Similarly, P(B) = 1/2

 P(B/C) = 2/11 (Two favorable cases (7 and 8) and 11 total number of cases).

 Hence, P(C) = ½ × 11/36 + ½ × 2/11 = 193/792 (Ans.)

Example 3:  Sixteen players P1, P2, ….. P16 play in a tournament. They are divided into eight pairs at random. From each pair, a winner is decided on the basis of a game played between the two players of the pair. Assuming that all the players are of equal strength, the probability that exactly one of the players P1 and P2 is among the eight winners is

(a) 4/15

(b) 5/9

(c) 3/8

(d) 8/15

Solution: Let E1 and E2 denote the event that P1 and P2 are paired or not paired together. Let A denote the event that one of the two players P1 and P2 is amongst the winners.

 Since, P1 can be paired with any of the remaining 15 players, so P(E1) = 1/15

and P(E2) = 1 – P(E1) = 1 – 1/15 = 14/15

In case E1 occurs, it is certain that one of P1 and P2 will be among the winners. In case E2 occurs, the probability that exactly one of P1 and P2 is among the winners is

 P[(P1 ∩ P2C) ∪ (P1C ∩ P2)] = P(P1 ∩ P2C) + P(P1C ∩ P2)

                                                  = P(P1) P(P2C) + P(P1C) P(P2)

                                                  = ½ (1 - 1/2) + (1 - 1/2)1/2

                                                  = ¼ + ¼

                                                  = ½

      i.e. P(A/E1) = 1 and P(A/E2) = ½

 By the total probability rule,

 P(A) = P(E1). P(A/E1) + P(E2) P(A/E2)

          = 1/15 (1) + 14/15(1/2)

        = 8/15

Example 4: In a test an examinee either guesses or copies or knows that answer to a multiple choice question which has 4 choices. The probability that he makes a guess is 1/3 and the probability that he copies is 1/6. The probability that his answer is correct, given the copied it, is 1/8. Find the probability that he knew the answer to the question, given that he answered it correctly.


P(g) = probability of guessing = 1/3

P(c) = probability of copying = 1/6

P(k) = probability of knowing = 1 - 1/3 - 1/6 = ½

(Since the three-event g, c and k are mutually exclusive and exhaustive)

P(w) = probability that answer is correct

P(k/w) = (P(w/k).P(k))/(P(w/c)P(c) + P(w/k)P(k) + P(w/g)P (g)) (using Baye's theorem)

            = (1×1/2)/((1/8,1/6) + (1×1/2) + (1/4×1/3) )

            = 24/29(Ans.)

Example 5: A speaks truth 3 out of 4 times. He reported that Mohan Bagan has won the match. Find the probability that his report was correct. 


Method 1:

Let T : A speaks the truth

 B : Mohan Bagan won the match

 Given, P(T) = 3/4

 .·. P(TC) = 1 - 1/3 = 1/4

 A match can be won, drawn or loosen

 .·. P(B/T) = 1/3 P(B/TC) = 2/3.

 Using Baye's theorem we get

 P(T/B) = (P(T).P(B/T))/(P(T).P(B/T) + P(TC)P(B/TC))

            = 3/4×1/3)/(3/4×1/3 + 1/4×2/3) = (1/4)/(5/12)


Method 2:

Let, T : The man speaks truth

A : Mohan Bagan won the match

B : He reported that Mohan Bagan has won.

P(A) = 1/3(the match may also end in a draw)

P(T) = ¾

P(B) = P(A) P(T) + P(AC) P(TC)

        = 1/3×3/4 + 2/3×1/4

        = ¼ + 1/6

        = (3+2)/12 = 5/12

 P(T/B) = (P(B/T).P(T))/(P(B)) = (1/3×3/4)/(5/12)

            = 3/5 (Ans.)

Question-Solving Tips

Question-Solving Tips for JEE Main 2021 Mathematics

  • Solve Everyday: Mathematics is one subject that you can’t miss out on practicing on even for a single day. Candidates should make sure that they practice 20 -25 questions of mathematics every day.
  • By the Clock: Candidates must make sure that they are going by the clock when they solve mathematical problems. If you fail to complete the questions in a given time limit, try to set a time limit for every question. 
  • Classify Your Problems: When you solve questions, you can label them as ‘E, M and D’. E for the questions that you found easy and don’t need to be looked at during the time of revision. M for the questions which you found somewhat challenging and you need to look at them once during the time of revision. D for the questions you found very difficult and you must solve them in order to keep the concepts fresh. 
  • Back your approach with a logical sequence: It is best to back your approach while solving the problem with logic, avoid guesswork at every step as much as possible. An accurate logical sequence will bring conceptual clarity.
  • Day wise Targets: Mathematics syllabus is vast and dynamic, don’t panic by looking at how much is still left to cover. Candidates can set day-wise targets beforehand and make sure they stick to it.
  • End your day with analyzing: Just practicing randomly won’t do any good, You must keep a track of your mistakes and weak spots. Analyze whatever you’ve studied during the day and overcome your weaknesses.

Best Reference Books

Best Reference Books to Cover JEE Main 2021 Mathematics Syllabus

Books and Authors Best Suitable For
Maths for Class XI and XII by R.D. Sharma Understanding of Basics
Maths for Class XI and XII by R.S. Agarwal Understanding of Basics
Plane Trigonometry by S L Loney Trigonometry
The Elements Of Coordinate Geometry by S L Loney Coordinate Geometry
Algebra by Dr S K Goyal Arihant Publications Algebra
Geometry by Dr Gorakh Prasad  Geometry
Play with Graphs by Amit M Agarwal (Arihant Publications) Practicing Problems
Differential Calculus by Amit M Agarwal (Arihant Publications) Calculus
Integral Calculus by Amit M Agarwal (Arihant Publications) Calculus

Candidates must not forget to cover NCERT of Class XI and XII thoroughly as test takers often have reviewed it as the best source of preparation for handling JEE Main Question Papers. 

Must Read Interviews of JEE Main Toppers (NTA Score 100)

Video Lectures by IIT Faculty for JEE Main Mathematics Preparation

Mathematics online video lectures by IIT faculty can prove to be highly beneficial for the candidates. The links for the video lectures can be accessed from the NTA website. The steps to access the video lectures are as follows:

  • Step 1: Visit the official website of NTA i.e.
  • Step 3: You will be redirected to the page containing the name of different subjects. 
  • Step 4: Choose the video lecture by clicking on the subject. 

Direct Link to JEE Main Mathematics Video Lectures

Difficulty Level Analysis for JEE Main 2021 Mathematics

The level of difficulty of the JEE Main Mathematics section varies in different sessions. It often comes across as the most challenging and time consuming section to the test takers. For the understanding of candidates, a basic distribution of number of questions in terms of difficulty level of B.E/ B. Tech paper of JEE Main 2020 January session is tabulated below:

Sections Tough Medium Easy
Chemistry 4 11 10
Mathematics 2 10 13
Physics 2 7 16
Sections Tough Medium Easy
Chemistry 4 11 10
Mathematics 2 10 13
Physics 2 7 16

Mathematics section for the January B.E/ B.Tech paper can be defined as of a medium difficulty level overall but candidates must keep in mind that level of difficulty is a subjective concern and different candidates can have a different perspective on the question paper, All the Best!

Frequently Asked Questions

JEE Main Mathematics Syllabus FAQs

Ques. Is the JEE Main mathematics syllabus different for BE/BTech, BArch and BPlanning?

Ans.  No, the JEE Main 2021 mathematics syllabus is the same for all three papers.

Ques. Are definite integrals part of the JEE Main Mathematics syllabus?

Ans. Yes, definite integrals are a part of the syllabus, under the integral calculus section.

Ques. What topic has the highest weightage in the JEE Main mathematics syllabus?

Ans. According to previous years trends, both coordinate geometry and differential calculus have the highest weightage with each carrying 17% of the total marks of the paper.

Ques. What is the most scoring part of the JEE Main mathematics syllabus?

Ans. The Coordinate geometry section is one of the most scoring parts of the JEE Main mathematics syllabus as it is mostly formula based.

Ques. What is the trickiest part of the JEE Main mathematics syllabus?

Ans. The Probability section of the JEE Main mathematics syllabus can be quite challenging as it focuses on testing the student’s logical understanding and imagination.

Ques. How do I tackle the large JEE Main mathematics syllabus properly?

Ans. The systematic approach to prepare for JEE Main mathematics syllabus is to divide it up into smaller sections and practice a few of those sections every day while solving sample papers to find your problematic areas.

*The article might have information for the previous academic years, which will be updated soon subject to the notification issued by the University/College.

JEE Main 2021 : 17 answered questions


Ques. What are the basic criteria required for joining PEC Chandigarh?

● Top Answer By Shobhna Chaturvedi on 02 May 21

Ans. Below are the procedures to get admission in undergraduate courses at PEC Chandigarh.  You will have to score at least 75% in your board exam, it is the basic criteria to appear in JEE Main. Appear and secure a good score in JEE Main. You will get three consecutive attempts for JEE Main. Admission at PEC is purely based on JEE Main score. You can check the recent cutoff for PEC on the official website to get an idea of what to expect. All the qualified candidates have to participate in the counseling process and they are allotted seats as per the rank secured in JEE Main and choices elected by them. If you are applying for admission one year after your 10+2, you will need to produce a gap year certificate during counseling. So, these are some eligibility criteria for you to keep a note of.Read more
1 Answer

Ques. What exam must one clear and with what cutoff to get into IIIT Hyderabad?

● Top Answer By suyashi choubey on 19 Mar 21

Ans. There are different examinations to get admission at IIIT Hyderabad. The mode of admission at the institute is as follows.  JEE Main: Ensure that you score 270+ in the JEE Main to get a seat in a course of your interest. Through this mode, you can even take admission for all branches except CLD, CHD. Test and Interview: If you want to get a seat in the CLD or CHD course can definitely go for this mode of admission.  In this mode, you will experience at first a test and after that, all who clear the test will be called for a Personal Interview.  However, there is no definite cutoff for the test, but you need to give your personal best to qualify for the interview. NTSE, KVPY: First, you have to clear a test. Those who qualify for the test are called for a Personal Interview.  From there, candidates are selected for admission. However, this mode of admission is for the CND course only. DASA mode: This mode is especially meant for the students who have studied 11th and 12th(or equivalent) outside India and are valid foreign passport holders. Generally, all branches accept admission through this mode.  A valid SAT II score of above 2000 is a must-needed criterion. SAT I score is taken into consideration in case of ties. Olympiad mode: This mode is only applicable for students who have been selected for training in Science and Linguistics to represent India in International Olympiads.  In this mode, students are chosen through a Personal Interview. Admissions are granted for CSD, ECD, CND, BSD, and CLD branches. Lateral Entry:  In order to get a seat through this mode of admission, there is a test and a personal interview round. Generally, children are admitted to the second year in IIIT-H through lateral entry. As what other colleges teach in 2 years, IIIT-H teaches in the first year itself. This mode of admission is meant for students who have completed their first two years of engineering in either Computer Science or Electronics branch from any other college. Students are admitted to the CSD branch if they were in the Computer Science branch in their college or to ECD if they were in the Electronics branch.Read more
1 Answer

Ques. Which one is better, dropping a year for the BITSAT and JEE, or joining universities such as LPU or Amity?

● Top Answer By Rupesh Biswas on 12 Feb 21

Ans. Every candidate has their own perspectives and reasons for dropping a year or opting for a degree in any institute. It entirely depends upon your thoughts and decisions, and what you actually want from your career. The points mentioned below can be considered as a set of guidelines that would help to choose the right path. There are several choices which you can make in case of admission. You can prefer a good renowned government college and take any available stream in it, or a good private college (BITS, Thapar, etc) and choose your favorite stream. Considering the fact that you are comfortable with the high fees of the private institutes. Having an educational gap (drop) of one year is not a bad thing for a future career. Most candidates get to learn a lot of things from the self-available time, even some have genuine reasons for the drop. So, if you are extremely passionate about a stream, it is absolutely all-right to drop for a year. Check for the 50% quota for insiders in your home state NIT. If present, it will increase the chances of getting some stream in it. Usually, it is considered that the stream matters much less. What matters is the college name tag. There are several other institutes like Punjab University, UIET, etc which provide good infrastructure and opportunities. JAC is a committee for counseling in some good institutes in Chandigarh. These are some of the basics tips that would help you in the decision-making process.Read more
1 Answer

Ques. Which is better: JEE or BITSAT?

● Top Answer By Aniket Atul Mahulikar on 20 Jan 21

Ans. Both JEE and BITSAT are competitive entrances and comparing the two is not a good decision. Instead, try to focus on understanding the basics and concepts since the syllabus for the two entrances is pretty much the same. If you prepare religiously for JEE Advanced then you will be able to ace all engineering entrance exams including JEE Main and BITSAT. The table given below gives a brief comparison of the exams: Exam JEE Advanced BITSAT Mode of Exam Computer-based Test Computer-based Test Duration 3 Hours 3 Hours Type of Questions Multiple Choice Questions, Numerical Aptitude Questions Multiple Choice Questions Negative Marking Yes Yes  Syllabus Physics, Chemistry, Maths Physics, Chemistry, Maths, English and Logical Reasoning  JEE Preparation: JEE Advanced paper includes questions primarily from Physics, Chemistry and Maths, thus, try to give these topics enough time and practice.  While it is best to focus on JEE Advanced, it is equally important to prepare for BITSAT since the exam syllabus contains not only Physics, Chemistry, and Maths but also English and Logical Reasoning. BITSAT Preparation: Cracking BITSAT is all about technique and speed so try to practice online mock tests, previous year papers, and cover topics like English and Logical Reasoning to score better in the exams.  You should devote at least 3 months to BITSAT, three months are enough if you have a clear understanding of your basics and a strong foundation. Try not to compare the two exams; instead, focus on clearing your basics with the aim of cracking JEE Advanced so that you can score well in both JEE and BITSAT.Read more
1 Answer

Ques. Which books have you used for the JEE Main and the BITSAT?

● Top Answer By Sudeshna Bhar on 20 Jan 21

Ans. There are several books you can refer to for the preparation of JEE Main and BITSAT exams. But the most important thing to do is to focus on NCERTs and practice online mock tests, previous year question papers, and question banks for every subject. It is equally important to study the exam pattern, type of questions, and syllabus of JEE Main and BITSAT before purchasing any reference book.  Subjectwise Books for JEE Main and BITSAT- Physics: Concepts of Physics by H.C. Verma: The best book for Physics. The book contains several practice questions for you to solve. Fundamental Physics by Halliday, Resnick, and Walker: It contains all the relevant topics. Understanding Physics by DC Pandey: This is the ideal book for JEE entrances; it covers all the relevant questions and topics.  Prep Guide to BITSAT by Arihant publications is a good book for BITSAT. Chemistry: Physical Chemistry: Modern Approach to Chemical Calculations by RC Mukherjee. It contains several practice questions for your reference. Organic Chemistry: A book by Paula Y. Bruice: It is the best for clearing doubts and building a strong foundation in Organic Chemistry. Inorganic Chemistry: Concise Inorganic Chemistry by J.D.Lee: The book covers all the relevant topics and contains several questions The Cengage set of 6 books by KS Verma. Mathematics: New Pattern JEE Mathematics Arihant Publications by SK Goyal. Algebra, Different Calculus, Integral Calculus, Vector, and 3D Geometry by Arihant Publication. A problem book in mathematical Analysis by G.N. Berman Mathematics for JEE Advanced by G.Tewani IIT Mathematics for JEE by M.L. Khanna. Play with graphs by Amit Agrawal. Algebra by G Tewani All these books are great reference books for BITSAT and JEE Main but you must try to focus on NCERTs and practicing questions.Read more
1 Answer


How many questions are asked from calculus?
common admission test

Hii Nishu, Greetings from collegedunia. Calculus is among the largest sections of modern mathematics and it has weightage of almost 14%. Out of 30 questions about 4 to 5 questions are asked from calculus Section. 

fauzia shahid
How many questions are asked?
rakhisree chatterjee

Hi, There are 100 questions (Mathematics: 25 questions, Aptitude: 50 and Planning Based Questions: 25) asked in JEE Main Examination.

mohammed najamuddin
Has there been any deletion in the syllabus?
common admission test

Hii Mohammad, Greetings from collegedunia. No, till now no such announcement has been made but With CBSE’s step of 30% syllabus reduction for class XI and XII for the academic year 2020-21, JEE Main 2021 Syllabus is most likely to get impacted. For more details Click Here

Is there any change in syllabus fo 2021 exam?
common admission test

Hii Sameer, Greetings from collegedunia. No, till now there is no change but With CBSE’s step of 30% syllabus reduction for class XI and XII for the academic year 2020-21, JEE Main 2021 Syllabus is most likely to get impacted. For more details Click Here

ananya pandey
Which book is best for preparation of maths?
common admission test

Hii Ananya, Greetings from collegedunia. Mathematics is often considered the most challenging subject and some best books to overcome this challenge are Objective Mathematics by R D Sharma, Algebra by Dr S K Goyal Arihant Publications and Plane Trigonometry by S L Loney. For more details about different books of different topics Click Here

What is the weightage of algebra?
rakhisree chatterjee

Hi, Questions are asked from every topic covered by JEE Main. The formulation of questions in exam depends of authority; but there is no such parity among topics.

vanshika chandra
What is the weightage of calculus?
rakhisree chatterjee

Hi, Calculus is the most important part of Mathematics section of JEE Main Paper. It covers around 40% of the total questions. In Indefinite integration, learn the standard formulae by heart. Also, go through the properties in definite integration very carefully.

vanshika chandra
Is RD Sharma sufficient for preparation?
rakhisree chatterjee

Hi, RD Sharma does make your foundation for JEE strong and ready for conceptual questions of Advanced but it is advisable to use other reference books and coaching institutes materials. RD Sharma Maths book for iit jee is not enough. The objective book focuses on MCQs rather than subjective questions.