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

What can jump higher than a building?

Asked by Neha on 24 Oct 2025


Complete the table series riddle by finding the number that can replace "??".

Tabular Math for All

Asked by Neha on 25 Sep 2024

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Asked by Neha on 27 Apr 2023


Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

Car Number Riddle

Asked by Neha on 13 Mar 2021

How can you tell a raw egg from a hard-boiled egg?

Asked by Neha on 09 Jan 2025

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

Asked by Neha on 11 Aug 2025


Why did Buffon take the goal with him after every Juventus match?

Asked by Neha on 24 Apr 2025

What came first, the chicken or the egg?

Asked by Neha on 29 Dec 2025

Find the next number in the sequence

5 12 24 36 ?

Asked by Neha on 08 Jul 2023


What kind of band never plays music?

Asked by Neha on 14 Jul 2025

Hot Articles

Amazing Facts

Gamers

In 2011, people playing Foldit, an online puzzle game about protein folding, resolved the structure of an enzyme that causes an Aids-like disease in monkeys. Researchers had been working on the problem for 13 years. The gamers solved it in three weeks.