Basic Ability Test Basic Ability Number Series and Sequences 2 — Questions and Answers
Question 1: What comes next in the series: 3, 6, 12, 24, 48, ___?
- 72
- 96 (Correct answer)
- 84
- 64
Correct answer: 96
Each term is multiplied by 2, so 48 × 2 = 96.
Question 2: Find the missing number: 100, 91, 82, 73, ___, 55
- 60
- 62
- 64 (Correct answer)
- 66
Correct answer: 64
Each term decreases by 9, so 73 − 9 = 64.
Question 3: Which number continues the pattern: 1, 4, 9, 16, 25, ___?
- 30
- 35
- 36 (Correct answer)
- 49
Correct answer: 36
These are perfect squares (1², 2², 3², …), so the next is 6² = 36.
Question 4: Complete the sequence: 2, 3, 5, 8, 13, ___?
- 18
- 19
- 20
- 21 (Correct answer)
Correct answer: 21
Each term is the sum of the two preceding terms (Fibonacci pattern), so 8 + 13 = 21.
Question 5: What is the missing term? 5, 10, 20, ___, 80, 160
- 30
- 35
- 40 (Correct answer)
- 45
Correct answer: 40
Each term doubles, so 20 × 2 = 40.
Question 6: Find the next number: 81, 27, 9, 3, ___?
- 1 (Correct answer)
- 0
- 2
- 6
Correct answer: 1
Each term is divided by 3, so 3 ÷ 3 = 1.
Question 7: Which value fills the blank? 4, 7, 11, 16, 22, ___?
- 28
- 29 (Correct answer)
- 30
- 31
Correct answer: 29
Differences increase by 1 each time (3,4,5,6,7), so 22 + 7 = 29.
Basic Ability Test Basic Ability Number Series and Sequences 2
What comes next in the series: 3, 6, 12, 24, 48, ___?