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.

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 of 20 students, 5 are boys and remaining are girls. Find the percentage of girls.

In a class, 5% of the boys and 10% of the girls have an IQ more than 150. In the class 60% of the students are boys and rest girls. If a student is selected at random and found to have an IQ of more than 150, find the probability that the student is a boy.

In a class, 5% of the boys and 10% of the girls have an IQ more than 150. In the class 60% of the students are boys and rest girls. If a student is selected at random and found to have an IQ of more that 150, find the probability that the student is a boy.

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : 2 boys and 1 girl.

In a class there are 60 boys and 40 girls. Among the boys as well as girls, half of them are Tamilians. If a student is selected at random then the probability of selecting a boy or Tamilian is

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : all Boys.

A class consists of 10 boys and 8 girls. Three students are selected at random. Find the probability that the selected group has : all girls.

In a class of 30 students,there are 17 girls and 13 boys.If a student is chosen at random, what is the probability of choosing a girl?