NCERT Solutions for Class 11 Maths Chapter 7 Exercise 7.4

Collegedunia Team

Content Curator

Class 11 Maths NCERT Solutions Chapter 7 Permutations and Combinations Exercise 7.4 is based on Combination.

Download PDF NCERT Solutions for Class 11 Maths Chapter 7 Permutations and Combinations Exercise 7.4

Check out the solutions of Class 11 Maths NCERT solutions Chapter 7 Permutations and Combinations Exercise 7.4

Read More: NCERT Solutions For Class 11 Maths Chapter 7 Permutations and Combinations

Also check other Exercise Solutions of Class 11 Maths Chapter 7 Permutations and Combinations

Also check:

Chapter Related Topics
Permutations and Combinations Formulas	Factorial Formula	Stirling Formula
Combinatorics	Involute	Difference between Permutation and Combination

Also check:

Math Study Guides
Maths Important Formulas	Maths MCQs	Comparison Articles in Maths
Difference Between Topics in Maths	Math Study Material	Arithmetic

CBSE CLASS XII Related Questions

1.
A carpenter needs to design a wooden box in the shape of a cuboid such that the sum of its length and breadth is 3 cm more than its height. Twice of its length, thrice of its breadth and its height add up to 10 cm. Its breadth added to 7 times its height is 1 cm less than 3 times its length.
2.
Find the vector and cartesian equations of the line passing through the point of intersection of the lines \( \vec{r} = (\hat{i} + \hat{j} - \hat{k}) + \lambda(3\hat{i} - \hat{j}) \) and \( \vec{r} = (4\hat{i} - \hat{k}) + \mu(2\hat{i} + 3\hat{k}) \) and parallel to the line \( \frac{x - 1}{-2} = \frac{7 - y}{-3} = z \).
View Solution
3.
If \( xy = e^{x - y} \), then find \( \frac{dy}{dx} \).
View Solution
4.
An NGO organises a charity event in which they decide to distribute woollen caps to protect children from winter. The caps to be distributed are in three separate boxes, Box I has 30 red caps, Box II has 20 red and 10 green caps, and Box III has 30 green caps. The probability that a Box i is selected and a cap picked out is i/6, where i = 1, 2, 3.
Based on the above information, answer the following questions :
5.
Find:

The shortest distance between the lines: \[ \vec{r}=(4+\lambda)\hat{i}+(2\lambda-1)\hat{j}-3\lambda\hat{k} \] and \[ \vec{r}=(1+2\mu)\hat{i}+(4\mu-1)\hat{j}+(2-5\mu)\hat{k} \]
View Solution
6.
Find:

The principal value of \[ \sec^{-1}(\sqrt{2})+2\csc^{-1}(-2) \] is:
- \(-\frac{\pi}{2}\)
- \(-\frac{\pi}{4}\)
- \(\frac{\pi}{4}\)
- \(\frac{\pi}{2}\)
View Solution

Similar Mathematics Concepts

Permutations and Combinations: Formulas & Examples

Factorial: Definition, Formula, Factorial Table & Examples

Permutations and Combinations Formulas: Derivation, Example

NCERT Solutions for Class 11 Maths Chapter 7: Permutations and Combinations

Combinatorics: Formula, Features, Permutation & Combination

Difference Between Permutation and Combination

Involute: Introduction, Equations & Sample Questions

Important Questions For Class 11 Maths Chapter 7: Permutations and Combinations

NCERT Solutions for Class 11 Maths Chapter 7 Exercise 7.1

NCERT Solutions for Class 11 Maths Chapter 7 Exercise 7.2

CBSE CLASS XII Previous Year Papers

Mathematics

Mathematics Preparation Guides

Sequence and Series: Types, Formulas & Examples

Measures of Dispersion: Types, Absolute & Relative measure

Events and their Types in Probability

Angle between two lines: Derivation, Types, Formulae

Mathematics: Latus rectum of Ellipse- Definition, Equation, Examples and Sample Questions

Pascal’s Triangle: Construction, Notation, Pattern, Properties

Ellipse: Standard Equation, Derivation & Formula

Circle: Definition, Equation and Segments

Geometric Progression: Definition, Sum of N Terms, Formula

Conic Sections: Formula, Equations & Examples

Parabola: Graph, General Equation, Formulae, Latus Rectum, Focal, Normal , Tangent, Sample Questions

Horizontal and Vertical Lines: Formula, Examples & Equations

Conic Sections: Parabola, Hyperbola, Ellipse, Circle

Eccentricity of Ellipse Formula, Definition, Derivation & Examples

Complex Numbers and Quadratic Equations

Real Valued Functions: Types, Operations & Examples

Latus Rectum of Parabola: Formula, Length & Derivation

Venn Diagrams: Symbols, Formula, Set Operations & Examples

Types of Events in Probability

Types of Sets: What is Set, Examples & Symbols

Mathematics NCERT Solutions

Factorial Formula: Calculation, Values, Application

Multiplication Rule of Probability: Proof and Solved Examples

Logarithms: Rules, Properties and Formula

Mathematical Logic: Conjunction, Disjunction and Negation

Value of Log 1: Logarithmic Functions, Value of In 1, Logarithmic Values

Solving Inequalities

Tautology: Operators, Logic Symbols, and Truth Table

Quotient Rule: Definition, Formula, Applications and Sample Questions

Conjugate of a Complex Number: Definition, Properties and Equations

Difference between Ln and Log: Definitions and Properties

You can also check

Comments

No Comments To Show

SUBSCRIBE TO OUR NEWS LETTER

COLLEGE NOTIFICATIONS

EXAM NOTIFICATIONS

NEWS UPDATES

Download the Collegedunia app on

downloadapp_banner image

downloadapp_banner image

© 2026 Collegedunia Web Pvt. Ltd. All Rights Reserved