What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy?

Solution:

Given, there are 7 students out of which 3 are girls and 4 are boys.

We have to find the probability of a student chosen at random is a boy.

Probability can be defined as the ratio of the number of favorable outcomes to the total number of outcomes of an event.

Probability = number of favourable event/number of possible event

Total number of students = 7

Favourable event = choosing a boy at random

Total number of favourable event = 4

Probability of choosing a boy = 4/7

Therefore, the required probability is 4/7.

✦ Try This: What is the probability that a student chosen at random out of 6 girls and 4 boys is a girl

☛ Also Check: NCERT Solutions for Class 7 Maths Chapter 3

NCERT Exemplar Class 7 Maths Chapter 3 Problem 61

What is the probability that a student chosen at random out of 3 girls and 4 boys is a boy

Summary:

The probability that a student chosen at random out of 3 girls and 4 boys is a boy, is 4/7.

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