EIAT Number Series and Pattern Recognition 1 — Questions and Answers
Question 1: What number comes next in the series: 2, 4, 8, 16, ___?
- 24
- 32 (Correct answer)
- 28
- 20
Correct answer: 32
Each term is doubled, so 16 × 2 = 32.
Question 2: Find the missing number: 3, 6, 9, ___, 15.
- 10
- 11
- 12 (Correct answer)
- 13
Correct answer: 12
This is an arithmetic sequence adding 3 each time, so 9 + 3 = 12.
Question 3: What comes next in the sequence: 1, 1, 2, 3, 5, 8, ___?
- 11
- 12
- 13 (Correct answer)
- 14
Correct answer: 13
Each term is the sum of the two preceding terms (Fibonacci sequence): 5 + 8 = 13.
Question 4: What is the next number: 100, 90, 81, 73, ___?
- 65
- 66 (Correct answer)
- 67
- 68
Correct answer: 66
The differences decrease by 1 each time (10, 9, 8, 7), so 73 − 7 = 66.
Question 5: Find the next term: 5, 10, 20, ___, 80.
- 35
- 40 (Correct answer)
- 45
- 50
Correct answer: 40
Each term is multiplied by 2, so 20 × 2 = 40.
Question 6: What is the next number in the series: 7, 14, 21, 28, ___?
- 32
- 33
- 35 (Correct answer)
- 36
Correct answer: 35
These are multiples of 7, so the next term is 7 × 5 = 35.
Question 7: Find the next term: 2, 5, 10, 17, 26, ___?
- 35
- 36
- 37 (Correct answer)
- 38
Correct answer: 37
The differences increase by 2 each step (3, 5, 7, 9, 11), so 26 + 11 = 37.
EIAT Number Series and Pattern Recognition 1
What number comes next in the series: 2, 4, 8, 16, ___?