Passengers having seat numbers from 1 to 100 are to be seated in a flight. There are 100 seats only in the plane and the passengers enter the plane according to their seat numbers (passenger having seat number 1 enters 1st an ...
Your friend has two children. You meet one of them and find out that he is a boy. What is the probability that the other child is a girl? P.S. - A child can only be a boy or girl ...