Questions
A man has 3 pairs of black socks and 2 pairs of brown socks kept together in a box. If he dressed hurriedly in the dark, the probability that after he has put on a black sock, he will then put on another black sock is
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Correct option is A
PB1= 6C110C1=610=35 PB2/B1=59B2= black ∴ PB1∩B2=PB1PB2/B1=35×59=13Similar Questions
A couple has 3 children and it is known that atleast one of them is a boy. Then the probability that the couple will have exactly two boys is
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