Find the probability that a leap year selected at random will contain 53 Wednesday or friday
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"For a leap year to have either 53 Thursday or 53 Friday, it must have them in the two days.
Leap year = 356 days
52 weeks and 2 days.
So we can have any of these combinations, a Wednesday and Thursday, a Thursday and Friday, a Friday and Saturday.
Thus the probability is 3/7.
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MARK BRAINLEAST
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