In a class there are 60 boys and 30 girls . In it, half of the boys and half of the girls know cricket. The probability of a person selected from the class is either a boy or a girl who know cricket is

In a class of 60 boys and 20 girls, half of the boys and half of the girls know cricket. The probability of a person selected from the class is either a boy or a girl who knows cricket is

In a class of 60 boys and 20 girls, half of the boys and half of the girls know cricket. Find the probability of the event that a person selected from the class is either a boy or girl who knows cricket.

In a class of 60 boys and 20 girls, half the boys and half the girls know cricket. Find the probability that the person selected from the class is either a boy or a girl who knows cricket.

In a class there are 60 boys and 30 girls. In it, half of the boys and half of the girls have squint eyes. If a person is chosen at random , the probability for the person to be either a boy or a squint eyed person from girl

In a class, three are 30 boys and 25 girls. Find the ratio of the number of boys to that of girls.

In a class there are 20 boys and 15 girls. In how many ways can 2 boys and 2 girls be selected?

In a class there are 20 boys and 25 girls. In how many ways can a pair of a boy and a girl be selected?

A class consists of 30 boys and 20 girls of which half the boys, and half the girls have blue eyes. Find the probability that a student chosen at random is a boy or has blue eyes.

In a class there are 17 boys and 13 girls . In another class there are 15 boys and 12 girls. What is the probability of selecting a girl from all students from both the classes.

In a class there are 14 boys and 10 girls. If one child is absent, the probability that it is a boy is