2n boys are randomly divided into two subgroups containing n boys each. The probability that the two tallest boys are in different groups is

The number of ways in which 10 boys can be divied into 2 groups of 5, such that two tallest boys are in two different groups, is equal to

A family has two children. If one of them is boy, then the probability that other is also a boy, is

Five boys and four girls sit in a row randomly. The probability that no two girls sit together

Five boys and three girls are seated at random in a row. The probability that no boy sits between two girls, is

There are two children in a family. Find the probability that at most one boy is there in the family.

Fourteen numbered balls (1, 2, 3, …, 14) are divided in 3 groups randomly. Find the probability that the sum of the numbers on the balls, in each group, is odd.

5 boys and 5 girls sit in a row randomly. Find the probability that all the boys sit together.

5 boys and 5 girls are siting in a row randomly . The probability that boys and girls sit alternately , is

Three boys and two girls stand in a queue. The probability, that the number of boys ahead is at least one more than the number of girls ahead of her is?

The probability that two boys do not have the same birthday is 0.897. What is the probability that the two boys have the same birthday ?