Number Series 3
11) Find the missing numbers in the series, 4, 20, 7, 14, 10, 8, 13, _, _.
- 2, 18
- 2, 14
- 2, 16
- 2, 15
Answer: C
Explanation:
This is an alternating addition and subtraction series in which 3 is added to each number in the first pattern and 6 is subtracted from each number in the second pattern. Therefore, the next two numbers are 2 (8-6) and 16 (13+3).
12) Find the wrong number in the series, 2, 6, 15, 31, 56, 93.
- 93
- 15
- 31
- 56
Answer: A
Explanation:
In this series, the difference between the two consecutive numbers is 4, 9, 16, 25, and 37 (22 + 32 + 42 + 52 + 62). So, after 25 there should be 36, not 37, and after 56 there should be 92 (56+36) not 93.
13) 12 12, 24 24, 36 36, 48, _, _?
- 48 58
- 48 60
- 48 62
- 48 64
Answer: B
Explanation:
In this series, each number repeats itself then increases by 12, so the next two numbers are 48 and 60 (48+12).
14) Find the next two numbers in the series, 52, 50, 48, 44, 42, 40, 36 _, _
- 33, 31
- 34, 32
- 34, 30
- 32, 30
Answer: B
Explanation:
This is an alternating subtraction series; 2 is subtracted twice, then 4 is subtracted once and so on. Therefore, the next two numbers are 34 and 32.
15) Find the next two numbers in the series 5, 12, 15, 22, 25, 32, _, _.
- 35, 42
- 39, 42
- 42, 35
- 34, 39
Answer: A
Explanation:
This is an alternating addition series that adds 7 then 3 and so on.
Number Series 1
Number Series 2
Number Series 4