### Number of Sons

**Problem:**

A man has two children. He says one of them is a son. What is the probability that the other one is also a son? (Hint: Answer is not 0.5 :P)

I have read this problem many times in many different forms. But still looks fresh :P

**Solution:**

Read the wikipedia article of a famous and related problem (Link)

HH - yes

ReplyDeleteHT - no

TH - no

1/3

Correct :)

ReplyDeleteThere are only three cases now than four because GG is eliminated.

ReplyDeleteCases are: GB; BG; BB

SO the required probability is: 1/3

yes 1/3

ReplyDelete