Question

Find the probabillity of February always having 29 days

Answer 1

Because it is leap year.

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Answer 2

There are 366 days in a leap year and 29 days in february of a leap year so we can see that february have (7×4)+1 days that means it has 7 weeks and an extra day.

Now, this extra day could be any of the 7 days of sunday, monday, tuesday, wednesday, thursday, friday and saturday.

So the total number of sample space=7

and probability of getting sunday from these 7 days= 1/7.

So, the probability of 5 sundays in february of a leap year is 1/7.



I hope it help you..