5 Maths Puzzle Riddles with Solutions and Explanations

This collection brings you some interesting maths riddles designed to sharpen your problem-solving ability. Each puzzle requires only basic mathematics, but challenges you to think logically and carefully before solving. These riddles are a fun way to improve calculation speed and reasoning skills, especially helpful for students.

1. Brain Test: Can You Solve This Maths Riddle?

20. Why: 𝑥+𝑥/2=30⇒3𝑥/2=30⇒𝑥=20.

In this article, you’ll find 5 engaging math riddles, each followed by its detailed answer and explanation. Use the solutions only for verification once you’ve tried solving the riddle yourself.

To make it more exciting, we’ve added a bonus maths riddle at the end. Unlike the others, this one comes without an answer—so put your math skills to the test and share your solution in the comments.

2. Brain Test: Can You Solve This Maths Riddle?

Break-even (no gain, no loss). Why: If CP = 100 → marked price = 125 → after 20% off: 125×0.8=100

3. Brain Test: Can You Solve This Maths Riddle?

8. Why: x^2-x=56 => x^2-x-56=0 => (x-8)(x-7)=0. Positive root of x=8

4. Brain Test: Can You Solve This Maths Riddle?

2 (so the number is 729). Why: 729×9=6561

5. Brain Test: Can You Solve This Maths Riddle?

No — it decreases by 25% overall. Start 100 -> + 50% = 150 -> -50% of 150 = 75. Net 75 (which is 25% less than 100).

Brain Test: Can You Solve This Bonus Maths Riddle?

23, 24, 25

Check Out: Pyramid Number Puzzle: Easy Picture Maths Puzzle for Kids