Practice MCQ Questions and Answer on Series Completion
91.
11, 10, ?, 100, 1001, 1000, 10001
(A) 101
(B) 110
(C) 111
(D) None of these
Solution:
The pattern is - 1, x 10 + 1, - 1, x 10 + 1, - 1, x 10 + 1, ..... So, missing term = 10 x 10 + 1 = 101.
92.
Choose the missing terms out of the given alternatives : UPI, ?, ODP, MBQ, IAW
(A) RHJ
(B) SHJ
(C) SIJ
(D) THK
Solution:
1st letter : U - 2 = S - 4 = O - 2 = M - 4 = I 2nd letter : P - 8 = H - 4 = D - 2 = B - 1 = A 3rd letter : I + 1 = J + 6 = P + 1 = Q + 6 = W
93.
3, 7, 23, 95, ?
(A) 62
(B) 128
(C) 479
(D) 575
Solution:
The pattern is x 2 + 1, x 3 + 2, x 4 + 3,..... So, missing term = 95 x 5 + 4 = 479.
94.
Choose the missing terms out of the given alternatives :S-4, F-6, H-8, J-10, ?, ?
(A) K-12, M-13
(B) L-12, M-14
(C) L-12, N-14
(D) K-12, M-14
Solution:
The letters in the series are alternative and the numbers indicate their position in the English alphabet from the beginning.
95.
One term in the number series is wrong. Find out the wrong term.
89, 78, 86, 80, 85, 82, 83
(A) 83
(B) 82
(C) 86
(D) 78
Solution:
The correct pattern is - 11, + 9, - 7, + 5, - 3, + 1. So, 86 is wrong and must be replaced by (78 + 9) i.e. 87.
96.
One term in the number series is wrong. Find out the wrong term.
56, 58, 62, 70, 84, 118, 182
(A) 58
(B) 62
(C) 84
(D) 118
Solution:
The correct pattern is + 2, + 4, + 8, + 16, + 32, + 64 i.e. + 2, + 22, + 23, + 24, + 25, + 26. So, 84 is wrong and must be replaced by (70 + 16) i.e. 86.
97.
Choose the missing terms out of the given alternatives.
Z, S, W, O, T, K, Q, G, ?, ?
(A) N, C
(B) N, D
(C) O, C
(D) O, D
Solution:
The given sequence is a combination of two series: I. Z, W, T, Q, ? and II. S, O, k, G, ?
98.
1, 1, 4, 8, 9, 27, 16, ?
(A) 32
(B) 64
(C) 81
(D) 256
Solution:
The series consists of squares and cubes of consecutive natural numbers i.e. 12, 13, 22, 23, 32, 33, 42, ..... So, missing term = 43 = 64.
99.
10, 100, 200, 310, ?
(A) 400
(B) 410
(C) 420
(D) 430
Solution:
The pattern is + 90 + 100, + 110,..... So, missing term = 310 + 120 = 430.
100.
0, 2, 8, 14, ?, 34
(A) 20
(B) 23
(C) 24.
(D) 25
Solution:
The pattern is + 2, + 6, + 6, + 10, + 10,..... So, missing term = 14 + 10 = 24.