SET 2 – Number Series Reasoning Questions and Answers

SET 2 – Number Series Reasoning Quiz GS Team published here most important Number Series Questions and Answers in english for Every competitive exams like SBI, RRB, Railway, Police, Clerk, Bank IBPS and more. These questions and answers will be helpful for crack all competitive exams.

SET 2 – Number Series Reasoning Questions and Answers


1. Complete this Number Series:
12, 11, 13, 12, 14, 13, …
A. 9
B. 10
C. 15
D. 19
Answer 19

Explanation
See the Number Series It's series alternating number of subtraction. First, 1 is subtracting, after 2 is Adding

2. Complete this Number Series:
97, 86, 73, 58, 45, (…..)
A. 24
B. 34
C. 44
D. 54
Answer 34

Explanation
See the Number Series. Check this Series Pattern, First 11 Substracting, Then 13 Substracting, After 15 Substracting and 13 Substracting then Now will 11 Substract.

3. Complete this Number Series:
36, 34, 30, 28, 24, …
A. 20
B. 26
C. 22
D. 17
Answer 22

Explanation
See the Number Series It's series alternating number of subtracting series. First, 2 is subtracting, after 4, then 2

4. Complete this Number Series:
1, 4, 2, 8, 6, 24, 22, 88, (…..)
A. 252
B. 54
C. 125
D. 86
Answer 86

Explanation
See the Number Series. Check this Series Pattern.
x 4, -2, x 4 ,– 2,…
Then = 88 – 2 = 86

5. Complete this Number Series:
7, 10, 8, 11, 9, 12, …
A. 8
B. 10
C. 15
D. 17
Answer 10

Explanation
See the Number Series It's series alternating addition and subtraction series. 3 is adding in the first pattern, and then 2 is subtracting.

6. Complete this Number Series:
3, 8, 22, 63, 185, (…..)
A. 245
B. 315
C. 550
D. 685
Answer 550

Explanation
See the Number Series. Check this Series Pattern.
x 3 – 1, x 3 – 2, x 3 – 3, x 3 – 4, ….
Then = (185 x 3) – 5 = 550.

7. Complete this Number Series:
2, 1, (1/2), (1/4), …
A. (1/2)
B. (1/8)
C. (1/1)
D. (1/5)
Answer (1/8)

Explanation
See the Number Series It's series division. Each number is half of the previous number. The number is divided by 2 successively to get the next result.
4/2 = 2. 2/2 = 1. 1/2 = ½.
(1/2)/2 = ¼.
(1/4)/2 = 1/8

8. Complete this Number Series:
3, 7, 15, 31, 63, (…..)
A. 127
B. 214
C. 91
D. 82
Answer 127

Explanation
See the Number Series. Check this Series Pattern.
Every number in the series is the preceding number Multiplying by 2 and after increased by 1.
Thus, (3 x 2) + 1 = 7, (7 x 2) + 1 = 15, (15 x 2) + 1 = 31
Then = (63 x 2) + 1 = 127.

9. Complete this Number Series:
80, 10, 70, 15, 60, …
A. 20
B. 21
C. 28
D. 72
Answer 20

Explanation
See the Number Series It's series alternating adding and subtracting series. In the first pattern, 10 is subtracting from every number to arrive at the next. In the second, 5 is adding to every number to arrive at the next.

10. Complete this Number Series:
6, 11, 21, 36, 56, (…..)
A. 81
B. 21
C. 71
D. 41
Answer 81

Explanation
See the Number Series. Check this Series Pattern.
+5, +10, +15, +20, …
Then = 56 + 25 = 81

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