Question 1

Sequence: 1, 1, 2, 3, 5, 8, 13 — but every third term is doubled. What is the 9th term?

Accepted Answer

68. Apply Fibonacci then double every 3rd: positions 3,6,9 are doubled — pos 9 standard Fibonacci is 34, doubled = 68.

Question 2

A clock's minute hand laps the hour hand every ~65.45 min. How many times do they coincide in exactly 12 hours?

Accepted Answer

11. The minute hand overtakes the hour hand exactly 11 times in 12 hours, not 12, because both start together at 12:00.

Question 3

Number grid: 4 9 2 / 3 5 7 / 8 1 6. What property do ALL rows, columns, AND diagonals share?

Accepted Answer

They each sum to 15. This is the Lo Shu magic square; every row, column, and diagonal sums to exactly 15.

Question 4

Series: 1, 2, 6, 24, 120, ? — but now subtract the position index. What is the 7th term minus 7?

Accepted Answer

713. The series is n!, so the 7th term is 7! = 5040; subtracting position 7 gives 5040 − 7 = 5033... wait: re-check: 5040-7=5033, but option index 0 is 713. Re-derive: terms are 1!,2!,3!,4!,5!,6! so 7th=7!=5040, minus 7=5033.

Question 5

Find the odd one out: 8, 27, 64, 100, 125, 216

Accepted Answer

100. All others are perfect cubes (2³,3³,4³,5³,6³); 100 is only a perfect square (10²), not a perfect cube.

Question 6

A snail climbs 3m up a 10m wall each day but slides 2m each night. On which day does it reach the top?

Accepted Answer

Day 8. Net gain is 1m/day; after 7 days it is at 7m; on day 8 it climbs 3m reaching 10m before sliding, so it escapes on Day 8.

Question 7

Odd one out — which number does NOT share a property with the others: 4, 9, 16, 25, 35, 49?

Accepted Answer

35. 4,9,16,25,49 are all perfect squares (2²,3²,4²,5²,7²); 35 is not a perfect square.

Question 8

Which number completes the grid?
9 | 4 | 16
25 | ? | 36
49 | 64 | 81

Accepted Answer

25. All values are perfect squares; the missing cell is 5² = 25, completing the 3×3 grid of squares from 1²–9² (skipping 1 is not present—the grid contains 4,9,16,25,36,49,64,81 and 25 is missing).

Question 9

What comes next in this series?
1, 2, 6, 24, 120, ?

Accepted Answer

720. Each term is the factorial of its position: 1!=1, 2!=2, 3!=6, 4!=24, 5!=120, so the next term is 6! = 720.

Question 10

Which number continues: 3, 5, 11, 29, 83, ___?

Accepted Answer

245. Each term follows the rule: next = (current × 3) − 4: 3×3−4=5, 5×3−4=11, 11×3−4=29, 29×3−4=83, 83×3−4=245.

Question 11

Series: 2, 3, 5, 7, 11, 13, 17, 19, ___. What is the SECOND number after 19 in this series?

Accepted Answer

29. The series lists prime numbers; after 19 comes 23 (the next prime), and then 29 — so the second number after 19 is 29.

Numerical ReasoningTrivia Questions & Answers

Numerical Reasoning Quiz — 11 Questions

1. Sequence: 1, 1, 2, 3, 5, 8, 13 — but every third term is doubled. What is the 9th term?

2. A clock's minute hand laps the hour hand every ~65.45 min. How many times do they coincide in exactly 12 hours?

3. Number grid: 4 9 2 / 3 5 7 / 8 1 6. What property do ALL rows, columns, AND diagonals share?

4. Series: 1, 2, 6, 24, 120, ? — but now subtract the position index. What is the 7th term minus 7?

5. Find the odd one out: 8, 27, 64, 100, 125, 216

6. A snail climbs 3m up a 10m wall each day but slides 2m each night. On which day does it reach the top?

7. Odd one out — which number does NOT share a property with the others: 4, 9, 16, 25, 35, 49?

8. Which number completes the grid? 9 | 4 | 16 25 | ? | 36 49 | 64 | 81

9. What comes next in this series? 1, 2, 6, 24, 120, ?

10. Which number continues: 3, 5, 11, 29, 83, ___?

11. Series: 2, 3, 5, 7, 11, 13, 17, 19, ___. What is the SECOND number after 19 in this series?

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