Find the probability that the birth days of six different persons will fall in exactly two calendar months.

The probability that the birth days of six different persons will fall in exactly two calendar months is

Find the number of ways in which the birthday of six different persons will fall in exactly two calendar months.

The probability that the birthdays of 6 girls will fall on 6 different calendar months of a year is

What is the probability that the 13 th days of a randomly chosen months is Friday?

Find the probability of having 5 Mondays in the month of August .

What is the probability that at least two persons out of a group of three persons were born in the same month (disregard year)?

4 people are selected randomly out of six married couple.Find the probability that exactly one married couple is formed exactly two married couple are formed the do not form a married couple.