Mensa Mensa IQ Sequence Completion 4 — Questions and Answers
Question 1: What comes next in the sequence: 3, 6, 12, 24, 48, ___?
- 72
- 84
- 96 (Correct answer)
- 108
Correct answer: 96
Each term doubles the previous one, so 48 × 2 = 96.
Question 2: Find the missing number: 1, 4, 9, 16, 25, ___?
- 30
- 35
- 36 (Correct answer)
- 40
Correct answer: 36
These are perfect squares (1², 2², 3², 4², 5²), so the next is 6² = 36.
Question 3: What is the next term: 2, 5, 10, 17, 26, ___?
- 35
- 37 (Correct answer)
- 38
- 39
Correct answer: 37
The differences are 3, 5, 7, 9, 11 — odd numbers increasing by 2, so 26 + 11 = 37.
Question 4: Complete the sequence: 81, 27, 9, 3, ___?
- 1 (Correct answer)
- 0
- 2
- 1/3
Correct answer: 1
Each term is divided by 3, so 3 ÷ 3 = 1.
Question 5: What comes next: Z, X, V, T, R, ___?
- P (Correct answer)
- Q
- O
- S
Correct answer: P
The sequence skips every other letter going backward through the alphabet, so after R comes P.
Question 6: Find the next number: 1, 1, 2, 3, 5, 8, 13, ___?
- 18
- 20
- 21 (Correct answer)
- 24
Correct answer: 21
This is the Fibonacci sequence where each term is the sum of the two preceding terms: 8 + 13 = 21.
Question 7: What is the missing number: 100, 91, 83, 76, 70, ___?
- 64
- 65 (Correct answer)
- 66
- 67
Correct answer: 65
The differences are −9, −8, −7, −6, −5, so the next term is 70 − 5 = 65.
Mensa Mensa IQ Sequence Completion 4
What comes next in the sequence: 3, 6, 12, 24, 48, ___?