Q. 34.7( 7 Votes )

What is the probability that the 13th days of a randomly chosen month is Friday?

Answer :

13th day is going to be any of the day from Monday to Sunday. So, probability that 13th day of a month being Friday is


But here the month is not declared. So, the probability of selecting a random month is .


By multiplication theory of Probability -


probability that the 13th days of a randomly chosen month is Friday



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