40% of the students in a class are girls. If 60% and 70% fo the boys and the girls respectively of the class pass a certain test, what is the probability that a randomly selected student from the class will have passed the test?

In a classroom 5% of the boys and 2% of the girls taller than 1.6 m. The class consists of 60% girl student. The probability that a randomly selected student is taken than 1.6 m is

20 % of 25 students in a class are boys.How many girls are in the class?

Out of 25 students of a class, 16 are girls. What is the percentage of girls?

There are 70 students in a class out of which 60% are boys. If 20 girls passes an examination then find the probability that a randomly selected girl would have passed the examination.

60 % of the students in a class are boys. If the number of girls in the class is 20 , what is the total number of students?.

In a class, 10% of the girls have eyes, and 20% of the boys have blue eyes. If the ratio of girls to boys in the class is 3 : 4, then what is the fraction of the fraction of the students in the class having blue eyes?

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 school there are 1000 students out of which 430 are girls. It is known that 10 % girls are studying in class XII. Find the probability of an event that randomly selected student studies in class XII given that selected student is girl.

In a school there are 1000 students, out of which 430 are girls. It is known that out of 430, 10% of the girls study in class XII. What is the probability that a student chosen randomly studies in class XII given that the chosen student is a girl?