The probability of getting 5 Sundays in a 31 day month is less than 1%.

• There are 7 days in a week, so the probability of any given day being a Sunday is 1/7.

• In a 31 day month, there are 4 full weeks a...read more

7*4=28, so we will have 4 full weeks and 3 extra days in a month with 31 days. Probabilty of having a sunday in those 3 days is 3/7.

In 31 day month there are 4 certain weeks and 3 extra days so probability of occurring Sunday is 3/7

4 complete weeks + 3 extra days make up 31 days. So for sure we will have 4 sundays, for 5th sunday there are three possibilities out of seven having sundays in those three days therefore answer is 3/...read more

There are 4 weeks + 3 days in a 31 days month. So the probability to for Sun to be in the 3 days = 3/7