If three people are chosen ata random, then the probability that no two of them were born in the same date of the month of september is

If four people are chosen at random, then the probability that no two of them were born in the same day of the week

If three people are chosen at random, then the probability that no two of them were born on the same day of the week is

If 4 people are chosen at random, then find the probability that no two of them were born on the same day of the week

If 4 people are chosen at random, then find the probability that no two of them were born on the same day of the week.

If 4 people are chosen at random,then the probability that exactly two of them have the same birthday and another two of them have another same birthday of a week is

If 30 dates are named at random,find the probability that 5 of them will be sundays.

Three numbers are chosen at random from 1 to 15. The probability that they are consecutive is

Three numbers are chosen at random from 1 to 20 .The probability that they are consecutive is

If 30 dates are named at random, what is the probability that 5 of them will be Sundays?