Secondary School (English Medium) (5 to 8) Class 7 - CBSE Question Bank Solutions for Mathematics

`4/5`of 45 is ______.

`2/5` of 25 is ______.

In a class of 40 students, `1/5` of the total number of students like to eat rice only, `2/5` of the total number of students like to eat chapati only and the remaining students like to eat both. What fraction of the total number of students like to eat both?

How many `1/16` kg boxes of chocolates can be made with `1 1/2` kg chocolates?

Sunita and Rehana want to make dresses for their dolls. Sunita has `3/4` m of cloth, and she gave `1/3` of it to Rehana. How much did Rehana have?

A picture hall has seats for 820 persons. At a recent film show, one usher guessed it was `3/4` full, another that it was `2/3` full. The ticket office reported 648 sales. Which usher (first or second) made the better guess?

In a survey, 200 students were asked what influenced them most to buy their latest CD. The results are shown in the circle graph.

1. How many students said radio influenced them most?
2. How many more students were influenced by radio than by a music video channel?
3. How many said a friend or relative influenced them or they heard the CD in a shop?

Kajol has ₹ 75. This is `3/8` of the amount she earned. How much did she earn?

There are 2 aces in each of the given set of cards placed face down. From which set are you certain to pick the two aces in the first go?

In the previous question, what is the probability of picking up an ace from set (d)?

In a school, only 2 out of 5 students can participate in a quiz. What is the chance that a student picked at random makes it to the competition?

On tossing a coin, the outcome is ______.

The probability of an event which is certain to happen is ______.

The probability of an event which is impossible to happen is ______.

When a die is thrown, the probability of getting a number less than 7 is ______.

In throwing a die the number of possible outcomes is ______.

Rohit collected the data regarding weights of students of his class and prepared the following table:

A student is to be selected randomly from his class for some competition. The probability of selection of the student is highest whose weight is in the interval ______.

If a die is thrown, the probability of getting a number greater than 6 is 1.

When a coin is tossed, there are 2 possible outcomes.

It is impossible to get a sum of 14 of the numbers on both dice when a pair of dice is thrown together.