Practice MCQ Questions and Answer on Series Completion
201.
One term in the number series is wrong. Find out the wrong term.
380, 188, 92, 48, 20, 8, 2
(A) 8
(B) 20
(C) 48
(D) 188
Solution:
The correct pattern is - 192, - 96, - 48, - 24, - 12, - 6. So, 48 is wrong and must be replaced by (92 - 48) i.e. 44.
202.
Choose the missing terms out of the given alternatives.
A, D, H, M, ?, Z
(A) T
(B) G
(C) N
(D) S
203.
3, 10, 101, ?
(A) 10101
(B) 10201
(C) 10202
(D) 11012
Solution:
Each term in the series is obtained by adding 1 to the square of the preceding term. So, missing term = (101)2 + 1 = 10202.
204.
1, 4, 10, 22, 46, ?
(A) 64
(B) 86
(C) 94
(D) 122
Solution:
The pattern is + 3, + 6, + 12, + 24,..... So, missing term = 46 + 48 = 94.
205.
Choose the missing terms out of the given alternatives : M, N, O, L, R, I, V, ?
(A) A
(B) E
(C) F
(D) H
Solution:
The given sequence is a combination of two series:I: M, O, R, V and II: N, L, I, ?The pattern in I is: M + 2 = O + 3 = R + 4 = VThe pattern in II is : N - 2 = L - 3 = I - 4 = ESo, the missing letter is E.
206.
One term in the number series is wrong. Find out the wrong term.
16, 22, 30, 45, 52, 66
(A) 30
(B) 45
(C) 52
(D) 66
Solution:
The correct pattern is + 6, + 8, + 10, + 12, + 14. So, 45 is wrong and must be replaced by (30 + 10) i.e. 40.
207.
Choose the missing terms out of the given alternatives.
AZ, CX, FU, ?
(A) IR
(B) IV
(C) JQ
(D) KP
208.
Choose the missing terms out of the given alternatives : AZ , CX , FU , ?
(A) IR
(B) IV
(C) JQ
(D) KP
Solution:
1st letter : A + 2 = C + 3 = F + 4 = J 2nd letter : Z - 2 = X - 3 = U - 4 = J
209.
Choose the missing terms out of the given alternatives :1st letter : Z, S, 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,, ? The pattern in I is: Z - 3 = W - 3 = T - 3 = Q - 3 = N The pattern in II is : S - 4 = O - 4 = K - 4 = G - 4 = C
210.
5, 6, 9, 15, ?, 40
(A) 21
(B) 25
(C) 27
(D) 33
Solution:
The pattern is + 1, + 3, + 6,....., i.e. + 1, + (1, + 2), + (1 + 2 + 3),..... So, missing term = 15 + (1 + 2 + 3 + 4) = 25.