10 boys and 2 girls are divided into 3 groups of 4 each. The probability that the girls will be in different groups is

24 boys are divided randomly into two equal groups. The probability that two tallest boys are in the different groups is

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

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

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

40 boys of a class are divided into two equal group. Find the probability that the 2 tallest boys are in two different groups.

6 boys and 6 girls are randomly divided into two equal groups. Find the probability that each group contains same number of boys and girls.

A group of 2n boys and 2n girls is randomly divided into two equal groups.The probability that each group contains the same number of boys and girls is (A) 1/2 (B) 1/n (c) 1/2n (D) None of these

4 boys and 4 girls are arranged in a row at random. Find the probability that the boys and girls sit alternatively.