What is the chance that a leap year selected at random contains 52 sundays?
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In a leap year there are 52 weeks, and two remaining days.
Those two days are consecutive, so there can 7 equally likely pairs.
Among the 7 pairs, (Saturday, Sunday) and (Sunday, Monday) pair will result in 53 Sundays.
So unfavourable pairs are these 2, rest (7–2=5) pairs are favourable.
So the probability = 5/7
Those two days are consecutive, so there can 7 equally likely pairs.
Among the 7 pairs, (Saturday, Sunday) and (Sunday, Monday) pair will result in 53 Sundays.
So unfavourable pairs are these 2, rest (7–2=5) pairs are favourable.
So the probability = 5/7
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