Numbers & Maths Trivia Quiz

1. What are the first five digits of Pi (π)?

1. 3.1412
2. 3.1415
3. 3.1416
4. 3.1419

2. What is a 'googol'?

1. 1 followed by 1,000 zeros
2. 1 followed by 100 zeros
3. A billion billion
4. The largest known prime number

3. What is the Fibonacci sequence?

1. A sequence doubling each time: 1, 2, 4, 8...
2. A sequence of prime numbers
3. Each number is the sum of the two before it: 0, 1, 1, 2, 3, 5, 8...
4. Each number multiplied by 3: 1, 3, 9, 27...

4. Who invented the concept of zero as a number?

1. Indian mathematicians (around 5th–7th century AD)
2. The ancient Egyptians
3. The ancient Greeks
4. The Babylonians (as a placeholder only)

5. What is a 'prime number'?

1. A number divisible only by 1 and itself
2. A number with exactly 3 factors
3. Any odd number
4. The first number in any sequence

6. The Golden Ratio (approximately 1.618) is often denoted by which Greek letter?

1. Delta (δ)
2. Phi (φ)
3. Pi (π)
4. Sigma (σ)

7. What is 'infinity' in mathematics?

1. 10 to the power of 100
2. A concept describing something without any limit or end
3. A number larger than a googol
4. The largest possible number

8. What is a perfect number?

1. A number divisible by all digits 1-9
2. A number equal to the sum of its proper divisors (excluding itself)
3. A number with no prime factors
4. An even prime number

9. What does 'algorithm' originally refer to?

1. A complex formula
2. A computer program
3. A form of mathematical proof
4. The name of a Persian mathematician (Al-Khwarizmi) who pioneered algebra

10. How many sides does a heptagon have?

1. 5
2. 6
3. 7
4. 8

11. What is Pythagoras's theorem?

1. a + b = c
2. a × b = c²
3. a² + b² = c²
4. c² − a² = b

12. What number do the digits of any multiple of 9 always add up to (directly or eventually)?

1. 18
2. 3
3. 6
4. 9

13. What is a 'palindrome number'?

1. A number divisible by 11
2. A number in the Fibonacci sequence
3. A number that reads the same forwards and backwards
4. A prime number

14. What is the value of 0! (zero factorial)?

1. 0
2. 1
3. Infinity
4. Undefined

15. Who proved that there are infinitely many prime numbers?

1. Archimedes
2. Euclid
3. Newton
4. Pythagoras

16. What famous unsolved problem concerns whether every even number greater than 2 is the sum of two primes?

1. Fermat's Last Theorem
2. Goldbach's Conjecture
3. Riemann Hypothesis
4. The P vs NP problem

17. How many degrees are in a circle?

1. 180°
2. 270°
3. 360°
4. 400°

18. What is the square root of 144?

1. 11
2. 12
3. 13
4. 14

19. What branch of mathematics deals with the study of shapes, sizes, and positions?

1. Algebra
2. Calculus
3. Geometry
4. Statistics

20. Andrew Wiles famously proved which previously unsolvable theorem in 1995?

1. Fermat's Last Theorem
2. Goldbach's Conjecture
3. The Four Colour Theorem
4. The Riemann Hypothesis