What will come in place of the question mark (?) in the following letter series? O, Q, S, U, W, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following letter series? O, Q, S, U, W, ?
A. A
B. X
C. Z
D. Y
Answer: Option D
Solution (By JKExamLibrary)
The series consists of alternate letters: O, Q, S, U, W. The next letter is Y.

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Practice More Letter Series Questions

Question #1
What will come in place of the question mark (?) in the following letter series? AB, EF, IJ, MN, ?
A. VR
B. QU
C. QR
D. WS

Correct Answer: Option C


Explanation:
First letters: A(1)+4=E(5), E+4=I(9), I+4=M(13), M+4=Q(17). Second letters: B(2)+4=F(6), F+4=J(10), J+4=N(14), N+4=R(18). The missing pair is QR.[reference:8]

This question belongs to: Reasoning Letter Series
Question #2
What will come in place of the question mark (?) in the following letter series? Z, C, H, O, X, ?
A. J
B. I
C. L
D. K

Correct Answer: Option B


Explanation:
Z(26)+3=C(29→3), C+5=H(8), H+7=O(15), O+9=X(24), X+11=35→I. So I.

This question belongs to: Reasoning Letter Series
Question #3
What will come in place of the question mark (?) in the following letter series? GI, HJ, IK, JL, ?
A. KN
B. LN
C. LM
D. KM

Correct Answer: Option D


Explanation:
First letters: G, H, I, J, K (+1). Second letters: I, J, K, L, M (+1). The next term is KM.

This question belongs to: Reasoning Letter Series