Practice MCQ Questions and Answer on Series Completion
31.
Choose the missing terms out of the given alternatives.
B, D, F, I, L, P, ?
(A) R
(B) S
(C) T
(D) U
32.
2, 15, 41, 80, ?
(A) 111
(B) 120
(C) 121
(D) 132
Solution:
The pattern is + 13, + 26, + 39,..... So, missing term = 80 + 52 = 132.
33.
One term in the number series is wrong. Find out the wrong term.
3, 4, 10, 32, 136, 685, 4116
(A) 10
(B) 32
(C) 136
(D) 4116
Solution:
The correct pattern is x 1 + 1, x 2 + 2, x 3 + 3, x 4 + 4,..... So, 32 is wrong and must be replaced by (10 x 3 + 3) i.e. 33.
34.
0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?
(A) 28
(B) 30
(C) 32
(D) 35
Solution:
The given sequence is a combination of two series : I. 0, 3, 8, 15, 24, ? and II. 2, 5, 10, 17, 26 The pattern in each one of I and II is + 3, + 5, + 7, + 9, ..... So, missing term = 24 + 11 = 35.
35.
Choose the missing terms out of the given alternatives.
H, I, K, N, ?
(A) O
(B) Q
(C) R
(D) S
36.
Choose the missing terms out of the given alternatives.
C, Z, F, X, I, V, L, T, O, ?, ?
(A) O, P
(B) P, Q
(C) R, R
(D) S, R
Solution:
The given sequence is a combination of two series: I. C, F, I, L, O, ? and II. Z, X, V, T, ?
37.
28, 33, 31, 36, ?, 39
(A) 32
(B) 34
(C) 38
(D) 40
Solution:
The pattern is + 5, - 2, + 5, - 2,..... So, missing term = 36 - 2 = 34.
38.
2, 2, 5,13, 28, ?
(A) 49
(B) 50
(C) 51
(D) 52
Solution:
The pattern is + 0, + 3, + 8, + 15, ..... i.e. + (l2 - 1), + (22 - 1), + (32 - 1), + (42 - 1), ..... So, missing term = 28 + (52 - 1) = 28 + 24 = 52.
39.
Choose the missing terms out of the given alternatives : C4X, F9U, I16R, ?
(A) K25P
(B) L25P
(C) L25O
(D) L27P
Solution:
1st letter : C + 3 = F + 3 = I + 3 = L Number : 4 (22 ) → 9 (32 ) → 16(42 ) → 25 (52 ) 3rd letter : X - 3 = U - 3 = R - 3 = O
40.
One term in the number series is wrong. Find out the wrong term.
8, 13, 21, 32, 47, 63, 83
(A) 13
(B) 21
(C) 32
(D) 47
Solution:
The correct pattern is + 5, + 8, + 11, + 14,..... So, 47 is wrong and must be replaced by (32 + 14) i.e. 46.