1.

A class word has 40 student. 25 boys and 15 girls. a student of the class is selected at random as the monitor. find the probability of selecting a girl student as the monitor.​

Answer»

Answer: 15 / 40 or 3 / 8

Given,

NUMBER of students = 40 .

Number of girls = 25

Number of boys = 40 - 25 = 15 .

So,

Probability of selecting a BOY is required to be found.

Sample space is the class.

n ( S ) = 40

Number of favourable outcomes are 15 .

So,

Probability of selecting a boy = 15 / 40 = 3 / 8



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