FBAT Number Series and Patterns 2 — Questions and Answers
Question 1: What number completes the series? 50, 45, 40, ___, 30
- 32
- 33
- 35 (Correct answer)
- 38
Correct answer: 35
The series decreases by 5 each time; 40 − 5 = 35.
Question 2: What comes next: 1, 3, 7, 15, ___?
- 27
- 29
- 31 (Correct answer)
- 33
Correct answer: 31
Each term is doubled and then 1 is added: (15 × 2) + 1 = 31.
Question 3: What is the missing number? 2, 5, 8, ___, 14
- 9
- 10
- 11 (Correct answer)
- 12
Correct answer: 11
The series increases by 3 each time; 8 + 3 = 11.
Question 4: What comes next: 81, 27, 9, 3, ___?
- 1 (Correct answer)
- 2
- 3
- 4
Correct answer: 1
Each term is divided by 3; 3 ÷ 3 = 1.
Question 5: What is the missing number? 7, 14, ___, 28, 35
- 18
- 19
- 20
- 21 (Correct answer)
Correct answer: 21
The series increases by 7; 14 + 7 = 21.
Question 6: What comes next: 0, 1, 1, 2, 3, 5, ___?
- 6
- 7
- 8 (Correct answer)
- 9
Correct answer: 8
This is the Fibonacci sequence where each term is the sum of the two preceding terms; 3 + 5 = 8.
What number completes the series? 50, 45, 40, ___, 30