Q. 34.7( 7 Votes )

# What is the probability that the 13^{th} days of a randomly chosen month is Friday?

Answer :

13^{th} day is going to be any of the day from Monday to Sunday. So, probability that 13^{th} 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 13^{th} days of a randomly chosen month is Friday

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