In Noorjahan's class 30% of the students are girls. There are 60 students in the class. Let's calculate to find the number of boys in Noorjahan's class.

(ii) Today, 7 students of our class are absents. There are 35 students in our class. Let us find the percentage of students persent today in class.

The ratio of boys and girls in Suchitra's class is 4 : 3 . If the total number of students in class is 63, find the number of boys and girls in the class. After a few days 3 more girls joined the class. Calculate the present ratio of boys and girls in Suchitra's class.

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.

There are 30 boys and 20 girls in Supriay's class. Let's find the ratio of number of boys to number of girls in Supriya's class.

30 students of my class were present. Total number of students in our class is 60. Let's find what percent of students have come to my class.

Proportion of girls in a class of 100 students is

In the mathematics examination, 60% students of our class got more than 80 marks. If there are 50 students in our class, Let's find how many have got above 80.

On the occasion of deepawali festival each student of a class sends greetings cards to one another if the postman deliver 1640 greeting cards to the students of this class then the number of students in the class is

A class has n students we have to form a team of the students including at least two students and also excluding atleast two students the number of ways of forming the team is