Maths Set Theory Puzzle

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?




Similar Riddles

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

Asked by Neha on 18 Sep 2021


What can go through glass without breaking it?

Asked by Neha on 23 Aug 2025

The answer I give is yes, but what I mean is no. What was the question?

Asked by Neha on 04 Sep 2025


Can you find a number that lies one third of the distance between 1/3 and 2/3?

Asked by Neha on 29 Dec 2020

_ _ _ IE _ _
_ _ _ IE _
_ _ IE _ _
_ _ IE _
_ _ _ _ IE

Like you see, some letters have gone missing from these words that contain the IE pair at some or the other place. The letters that will be used to fill the blanks are given below. Use them and form meaningful words. Can you do that?

A, C, D, F, H, K, L, M, N, N, O, R, R, S, S, S, T, T, Y and Y.

Asked by Neha on 22 Jul 2021

Can you replace the question mark with the correct number?

Fill in the Question Marked Space

Asked by Neha on 09 Mar 2024


You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

Asked by Neha on 05 Aug 2024

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Asked by Neha on 07 Nov 2024

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Asked by Neha on 21 Nov 2023


Replace the question mark with the number below given a simple math problem.

Fill the Question Mark

Asked by Neha on 03 Dec 2024

Hot Articles

Amazing Facts

Jigsaw puzzles

Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.