NCERT Solutions for Class 9 Maths Chapter 15: Probability

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The NCERT Solutions for Class 9 Mathematics Chapter 15 Probability have been included in this article. Probability is the state of being probable or something (such as an event or circumstance) that is probable. Probability is the branch of mathematics that states how likely an event is to occur in mathematical context.

Class 9 Maths Chapter 15 Probability belong to Unit 6 Statistics and Probability which has a weightage of 06 marks in the Class 9 Maths Examination. Class 9 Mathematics Chapter 15 has the following important concepts:

NCERT Solutions for Class 9 Mathematics Chapter 15

Download: NCERT Solutions for Class 9 Mathematics Chapter 15 pdf

NCERT Solution class 9 mathematics chapter 15

Important Topics in Class 9 Maths Chapter 15 Probability

Important Topics in Class 9 Maths Chapter 15 Probability are elaborated below:

Probability – An Experimental Approach

Experimental Probability can be defined as the branch of mathematics that deals with the uncertainty of the occurrence of events. Its calculation can be done by dividing the number of times an event has taken place by the number of trials in an experiment.

The formula of Experimental Probability is = Number of times a particular event occurs/ Number of total trials)

Probability — A Theoretical Approach

Theoretical Probability can be defined as the probability of the occurence of certain events that are not present in an experimental way.

The formula of Theoretical Probability is = Total number of desired outcomes/ Total number of outcomes

Also check:

Chapter Related Topics
Conditional Probability	Multiplication Theorem on Probability	Independent Events
Bayes’ Theorem	Bias	Bayes Theorem Formula
Conditional Probability Formula	Mean and Variance of Random Variable	Difference Between Mutually Exclusive and Independent Events

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CBSE X Related Questions

1.
In a class test, the sum of Anamika's marks obtained in Maths and Science is 30. Had she got 2 marks more in Maths and 3 marks less in Science, the product of the marks would have been 210. Find the marks she got in the two subjects.
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2.
The HCF of 960 and 432 is :
- 48
- 54
- 72
- 36
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3.
Prove that : \( \frac{\sec^3 \theta}{\sec^2 \theta - 1} + \frac{\text{cosec}^3 \theta}{\text{cosec}^2 \theta - 1} = \sec \theta \cdot \text{cosec} \theta (\sec \theta + \text{cosec} \theta) \)
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4.
D is the mid-point of side BC of \(\triangle ABC\). CE and BF intersect at O, a point on AD. AD is produced to G such that \(OD = DG\). Prove that OBGC is a parallelogram.
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5.
There are two sections A and B of Grade X. There are 28 students in Section A and 30 students in Section B. What is the minimum number of books you will acquire for the class library so that they can be distributed equally among students of Section A or Section B ?
- 144
- 2
- 420
- 272
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6.
The natural number 1 is :
- a prime number.
- a composite number.
- prime as well as composite.
- neither prime nor composite.
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