kanakdaga wrote:

In a leap year, find the probability that there are exactly 5 Mondays in the month of September?

a. 1/7

b. 2/7

c. 3/7

d. 4/7

e. 5/7

Since there are 30 days in the month of September, there are exactly 4 weeks and 2 extra days.

There are 2 possibilities that the month will have 5 Mondays.

1. When the first day is a Monday(1,8,15,22,29)

2. When the first day in a Sunday(2,9,16,23,30)

Therefore, the probability that there are exactly 5 Mondays is \(\frac{2}{7}\)

(Option B)
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