Find the probability that a leep year has 53 Sunday.

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Solution

Solution
A leap year has 366 days or 52 weeks and 2 odd days.
The two odd days can be {Sunday,Monday},{Monday,Tuesday},{Tuesday,Wednesday},{Wednesday,Thursday},{Thursday,Friday},{Friday,Saturday},{Saturday,Sunday}.
So there are 7 possibilities out of which 2 have a Sunday.
So the probability of 53 Sundays is 2/7

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