What a Math

If 21x = 79x, what is the value of x?




Similar Math Riddles

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Asked by Neha on 08 Apr 2025


A little girl goes to the store and buys one dozen eggs. As she is going home, all but three break. How many eggs are left unbroken?

Asked by Neha on 02 Mar 2022

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Asked by Neha on 09 Jul 2021


Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

Asked by Neha on 24 Aug 2024

Replace each alphabet with the number (1-9) to make the below equation correct.

AB * C = DE - F = GH / I

Asked by Neha on 29 Aug 2024

Our product and our sum always give the same answer. Who are we?

Asked by Neha on 11 Oct 2021


There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number.

What is the smallest number that stands true on the statement?

Asked by Neha on 20 Aug 2023

You have two jars of chocolates labelled as P and Q. If you move one chocolate from P to Q, the number of chocolates on B will become twice the number of chocolates in A. If you move one chocolate from Q to P, the number of chocolates in both the jars will become equal.

Can you find out how many chocolates are there in P and Q respectively?

Asked by Neha on 11 Apr 2023

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Asked by Neha on 18 Mar 2024


Can you find out the remainder when 3^300 is divided by 5?

Asked by Neha on 31 Oct 2023

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Amazing Facts

Out of the Box

The phrase “thinking outside the box” was popularised from the solution to a topographical puzzle involving 9 dots in a box shape.