1 A couple wants to have two children. What is the probability that (a) the first or the second is

1 A couple wants to have two children. What is the probability that (a) the first or the second is

1 A couple wants to have two children. What is the probability that (a) the first or the second is a boy (= at least one girl), (b) both children have same gender,(c) what is the probability for having two boys knowing that there is (=under condition of having) at least one boy?


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