What will come in place of the question mark (?) in the following letter series? AB, EF, IJ, MN, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following letter series? AB, EF, IJ, MN, ?

A. QU

B. WS

C. VR

D. QR

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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Question #1

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What will come in place of the question mark (?) in the following letter series? I, J, L, O, S, ?

A. X

B. A

C. Y

D. Z

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Correct Answer: Option A

Explanation:
Differences: +1,+2,+3,+4 – next +5 gives S(19)+5=24→X.

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Question #2

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What will come in place of the question mark (?) in the following letter series? S, T, V, Y, C, ?

A. J

B. K

C. H

D. I

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Correct Answer: Option C

Explanation:
Differences: +1,+2,+3,+4 – next +5 gives C(3)+5=8→H.

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Question #3

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What will come in place of the question mark (?) in the following letter series? LN, PR, TV, XZ, ?

A. AC

B. BC

C. AD

D. BD

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Correct Answer: Option D

Explanation:
First letters: L, P, T, X, B (+4, wrapping around). Second letters: N, R, V, Z, D (+4, wrapping around). The next term is BD.

This question belongs to: Reasoning Letter Series

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