Mathematics becomes more interesting when learning is combined with fun! These maths riddles help improve logical thinking, problem-solving skills, and creativity in students.
👉 Try to solve each riddle first, then check your answers at the end.
🔥 Mathematics Activity – Riddles
Riddles (1–35)
1. What comes once in a minute, twice in a moment, but never in a thousand years?
2. I am a three-digit number. My tens digit is five more than my ones digit. My hundreds digit is eight less than my tens digit. What am I?
3. What’s the smallest number divisible by 2, 3, 4, 5, and 6?
4. If you multiply me by any number, the answer will always be the same. What number am I?
5. A father is 30 years older than his son. In 10 years, he will be three times as old as his son. Find their present ages.
6. Multiply me by 4 and subtract 6, the result is 18. What number am I?
7. What two numbers multiply to give 36 and add to give 13?
8. If 2 hens lay 2 eggs in 2 days, how many eggs will 6 hens lay in 6 days?
9. What has a head and a tail but no body?
10. What three numbers give the same result when added or multiplied?
11. Subtract me from 10 and multiply by me, you get 21. What number am I?
12. Which number, when doubled, becomes equal to its square?
13. What number becomes smaller when you turn it upside down?
14. Two numbers have a sum of 100 and a difference of 20. What are they?
15. Which month has 28 days?
16. If 3x = 2x + 10, what is x?
17. I am an odd number. Take away one letter, and I become even. What am I?
18. What’s full of holes but still holds water?
19. What shape has no corners and no edges?
20. I have four sides but not always equal, and four angles but not always right. What am I?
21. A triangle has two equal sides and one 90° angle. What kind of triangle is it?
22. Which shape has all sides equal and all angles equal?
23. What’s the angle between the hour and minute hands at 3 o’clock?
24. How many degrees are in a triangle?
25. What’s the area of a square with side 5 cm?
26. You see 3 ducks in front of 2 ducks and 2 ducks behind 3 ducks. How many ducks are there?
27. I am a number between 30 and 50 divisible by 3 and 5. What am I?
28. If today is Monday, what day will it be after 45 days?
29. Double me, add 10, divide by 2, then subtract the original number. What do you get?
30. What’s the sum of interior angles of a pentagon?
31. I am a prime number. Add me to the next prime number to get 36. What am I?
32. What can you put between 7 and 8 to make it greater than 7 but less than 8?
33. If you have three apples and take away two, how many do you have?
34. A girl has as many brothers as sisters. Each brother has half as many brothers as sisters. How many boys and girls are there?
35. Using only addition, how can you add eight 8s to get 1000?
✅ Answer Key
1. M
2. 194 (corrected)
3. 60
4. 0
5. Son = 5, Father = 35
6. 6
7. 9 and 4
8. 18
9. Coin
10. 1, 2, 3
11. 3
12. 2
13. 9
14. 60 and 40
15. All months
16. 10
17. Seven
18. Sponge
19. Circle
20. Quadrilateral
21. Isosceles right triangle
22. Square
23. 90°
24. 180°
25. 25 cm²
26. 3
27. 45
28. Thursday
29. 5
30. 540°
31. 17
32. Decimal point (7.8)
33. 2
34. 4 girls and 3 boys
35. 888 + 88 + 8 + 8 + 8
👉 “Try these riddles with your friends and challenge their logical thinking!”