Out of 9 outstanding students in a college, there are 4 boys and 5 girls. A team of four students is to be selected for a quiz programme. Find the probability that two are boys and two are girls.

In a group of students , there are 3 boys and 3 girls . Four students are to be selected at random from the group . Find the probability that either 3 boys and 1 girl or 3 girls and 1 boy are selected .

A class has 20 girls and 16 boys. One student is selected at random. Find the probability that the student is a girl.

A class has 12 boys and 4 girls. If three students are selected at random from the class, what is the probability that all will be boys?

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.

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

In a certain college, 4% of boys and 1% of girls are taller than 1.75 metres. Furthermore, 60% of the students in the college are girls. A student is selected at random from the college and is found to be taller than 1.75 metres. Find the probability that the selected student is a girl.

In a certain college, 4% of boys and 1% of girls are taller than 1.75 metres. Furthermore, 60% of the students in the college are girls. A student is selected at random from the college and is found to be taller than 1.75 metres. Find the probability that the selected student is a girl.

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

A group of students comprises of 5 boys and n girls. If the number of ways, in which a team of 3 students can randomly be selected from this group such that there is at least one boy and at least one girl in each team, is 1750, then n is equal to:

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