GCAT Numerical Series Patterns 3 — Questions and Answers
Question 1: Find the next number: 5, 10, 20, 40, 80, ?
- 120
- 140
- 160 (Correct answer)
- 200
Correct answer: 160
Each term is multiplied by 2, so 80 × 2 = 160.
Question 2: What comes next in: 50, 47, 44, 41, 38, ?
- 33
- 34
- 35 (Correct answer)
- 36
Correct answer: 35
The series decreases by 3 each time, so 38 − 3 = 35.
Question 3: Identify the next term: 2, 6, 18, 54, 162, ?
- 324
- 384
- 486 (Correct answer)
- 648
Correct answer: 486
Each term is multiplied by 3, so 162 × 3 = 486.
Question 4: What is the missing 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 5: Complete the series: 64, 32, 16, 8, 4, ?
- 1
- 2 (Correct answer)
- 3
- 4
Correct answer: 2
Each term is halved (divided by 2), so 4 ÷ 2 = 2.
Question 6: Find the next term: 3, 7, 15, 31, 63, ?
- 95
- 107
- 127 (Correct answer)
- 131
Correct answer: 127
Each term is multiplied by 2 and then 1 is added: 63 × 2 + 1 = 127.
Question 7: What is the next value: 4, 9, 16, 25, 36, ?
- 42
- 45
- 48
- 49 (Correct answer)
Correct answer: 49
These are perfect squares of consecutive integers starting at 2 (2², 3², 4², 5², 6²), so the next is 7² = 49.
GCAT Numerical Series Patterns 3
Find the next number: 5, 10, 20, 40, 80, ?