16. In class 10A there are 20 boys and 30 girls. In 10B there are 15 boys and 35 girls. One student is to be selected from each class. a) What is the probability of both being girls? b) What is the probability of both being boys ? c) What is the probability of one boy and one girl? d) What is the probability of at least one boy?
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a) ½*(⅗ + 7/10) = ½× 13/10 =0.65
b) ½×(⅖ + 3/10) = 0.35
c)need time for full explanation
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