## NCERT Maths Solutions For class 10 Chapter 15 Probability

NCERT Solutions Class 10 Math Chapter 15 Probability

Probabilities are based on the results of an actual experiment, that is why it is called as experimental or empirical probabilities.

we defined the experimental or empirical probability P(E) of an event E as

P(E) = Number of trials in which the event happened/Total number of trials

The empirical interpretation of probability can be applied to every event associated with an experiment which can be repeated a large number of times. The requirement of repeating an experiment has some limitations, as it may be very expensive or unfeasible in many situations.

## Class 10 NCERT Chapter 15 Probability Summary

In this chapter, you have studied the following points :
1. The difference between experimental probability and theoretical probability.
2. The theoretical (classical) probability of an event E, written as P(E), is defined as

P (E) = Number of outcomes favourable to E/Number of all possible outcomes of the experiment

where we assume that the outcomes of the experiment are equally likely.

3. The probability of a sure event (or certain event) is 1.
4. The probability of an impossible event is 0.
5. The probability of an event E is a number P(E) such that

0 ≤ P (E) ≤ 1

6. An event having only one outcome is called an elementary event. The sum of the probabilities of all the elementary events of an experiment is 1.
7. For any event E, P (E) + P ( E ) = 1, where E stands for ‘not E’. E and E are called complementary events.

“The sum of the probabilities of all the elementary events of an experiment is 1.”

Here We have Given,

NCERT Solutions For Class 10 Maths Chapter 15 Probability Pdf