Series Completion Interview Questions and Answers
Question - 101 : - 2, 5, 10, 50, 500, 5000
A. 5
B. 10
C. 50
D. 5000
Answer - 101 : -
Option D
Explanation:
Each term of the series is the product of the preceding two terms.
So, 5000 is wrong and must be replaced by (50 x 500) i.e. 25000.
Question - 102 : - 5, 27, 61, 122, 213, 340, 509
A. 27
B. 61
C. 122
D. 509
Answer - 102 : -
Option A
Explanation:
The terms of the series are (23 - 3), (33 - 3), (43 - 3), (53 - 3), (63 - 3), (73 - 3),
(83-3).
So, 27 is wrong and must be replaced (33 - 3) i.e. 24.
Question - 103 : - 3, 7, 15, 39, 63, 127, 255, 511
A. 15
B. 39
C. 63
D. 127
Answer - 103 : -
Option B
Explanation:
The correct pattern is x 2 + 1.
So, 39 is wrong and must be replaced by (15 x 2 + 1) i.e. 31.
Question - 104 : - 380, 188, 92, 48, 20, 8, 2
A. 8
B. 20
C. 48
D. 188
Answer - 104 : -
Option C
Explanation:
The correct pattern is - 192, - 96, - 48, - 24, - 12, - 6.
So, 48 is wrong and must be replaced by (92 - 48) i.e. 44.
Question - 105 : - 16, 22, 30, 45, 52, 66
A. 30
B. 45
C. 52
D. 66
Answer - 105 : -
Option B
Explanation:
The correct pattern is + 6, + 8, + 10, + 12, + 14.
So, 45 is wrong and must be replaced by (30 + 10) i.e. 40.
Question - 106 : - 10, 26, 74, 218, 654, 1946, 5834
A. 26
B. 74
C. 218
D. 654
Answer - 106 : -
Option D
Explanation:
The correct pattern is x 3 - 4.
So, 654 is wrong and must be replaced by (218 x 3 - 4) i.e. 650.
Question - 107 : - In each of the following questions, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives.
WFB, TGD, QHG, ?
A. NIJ
B. NIK
C. NJK
D. OIK
E. PJK
Answer - 107 : -
Option B
Explanation:
Question - 108 : - AZ, GT, MN, ?, YB
A. JH
B. SH
C. SK
D. TS
Answer - 108 : -
Option B
Explanation:
Question - 109 : - H, I, K, N, ?
A. O
B. Q
C. R
D. S
Answer - 109 : -
Option C
Explanation:
Question - 110 : - Z, S, W, O, T, K, Q, G, ?, ?
A. N, C
B. N, D
C. O, C
D. O, D
Answer - 110 : -
Option A
Explanation:
The given sequence is a combination of two series:
I. Z, W, T, Q, ? and II. S, O, k, G, ?