Question

A couple plans to have 4 children. Assuming that boys and girls are equally likely, find the probability that the couple will have at least one boy?

Answer 1

`A` - the couple will have at least one boy

`A'` - the couple will have only girls

`P(A)=1-P(A')`

`|\Omega|=2^4=16\\|A'|=1\\\\P(A')=(1)/(16)\\\\P(A)=1-(1)/(16)=(15)/(16)`