Question 44

A class consists of 100 students; 25 of them are girls and 75 boys; 20 of them are rich and the remaining poor; 40 of them are fair-complexioned. The probability of selecting a faircomplexioned rich girl is

Solution

Given:

Total students  = 100

Girls = 25 , Boys = 75

Rich = 20 Poor = 80

Fair complexion = 40, Dark = 60

Probability of selecting:

 a girl = 25/100 = 1/4

a rich person = 20/100 = 1/5

 a fair person = 40/100 = 2/5

So, Probability of selecting  a faircomplexioned rich girl is = 1/4*1*5*2/5 = 0.02


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