if a couple has 7 children what is the probability of their having 3 girls and then having 4 boys
atoo:
its answer is 1/128 but i don't how
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3/7 and 4/7 respectively is your anwer
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total no. of outcomes= 7
no. of favourable outcomes= 3
p(having a girl)= 3/7
now, favourable outcomes for boys= 4
so, p(having a boy)= 4/7
_________
hope my answer is satisfactory..✌✌
no. of favourable outcomes= 3
p(having a girl)= 3/7
now, favourable outcomes for boys= 4
so, p(having a boy)= 4/7
_________
hope my answer is satisfactory..✌✌
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