A class consists of 21 boys and 9 girls. A student is to be selected for social work. Find the probability that (i) a girl is selected (ii) a boy is selected ​

A class consists of 10 boys and 8 girls. Three stuents are selected at random. Find the probability that the selected group has: (i) all boys (ii) all girls (iii) 2 boys and 1 girl.

A class consists of 10 boys and 8 girls.Three students are selected at random.What is the probability that the selected group has (i) all boys? (ii) all girls? (iv) at least one girl? (v) at most one girl?

In a class, there are 10 boys and 8 girls. When 3 students are selected at random, the probability that 2 girls and 1 boy are selected, is

There are 60 boys and 40 girls in a class.A student is selected at random.Find the probability that student is a girl.

In a class,there are 15 boys and 10 girls.Three students are selected at random,Find the probability that one girl and two boys are selected

Out of 8 outstanding students of school, in which there are 3 boys and 5 girls, a team of 4 students is to be selected for a quiz competition. Find the probability that 2 boys and 2 girls are selected.

In a class of 50 students, 20 are boys and rest are girls. A student is selected at random. Find the probability of selecting a boy.

In a class , there are 15 boys and 10girls / three students are selected at random . The probability that I girl and 2 boys are selected , is ,