Question

In class 10A,there are 30 boys and 20 girls.in 10B,there are 15 boys and 25 girls.one student is to be selected from each class.

a) what is the peobability of both being girls?
b) what is the probability of both being boys?
c) what is the probability of one boy and one girls?

Answer 1

Answer:

total students 80

a)  p(girls) =  45/80= 9/10

b) p(boys) = 45/80 = 9/10

c)p(both)= 8/9

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