Thursday, December 14, 2017

The Tuesday Birthday Problem

I ask people at random if they have two children and also if one is a boy born on a Tuesday. After a long search I finally find someone who answers yes. What is the probability that this person has two boys? Assume an equal chance of giving birth to either sex and an equal chance to giving birth on any day.

What is the probability that this person has two boys?

Tip: Don't conclude too early. 

Click here to know the correct answer! 

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