What will come in place of the question mark (?) in the following letter series? C, F, K, R, A, ? MCQ with Answer and Explanation

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What will come in place of the question mark (?) in the following letter series? C, F, K, R, A, ?

A. O

B. M

C. L

D. N

Answer: Option C

Solution (By JKSSB Mock Tests)

C(3)+3=F(6), F+5=K(11), K+7=R(18), R+9=A(27→1), A+11=12→L. So L.

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? XZ, BD, FH, JL, ?

A. NO

B. NP

C. MP

D. MN

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Correct Answer: Option B

Explanation:
First letters: X, B, F, J, N (+4, wrapping around). Second letters: Z, D, H, L, P (+4, wrapping around). The next term is NP.

This question belongs to: Reasoning Letter Series

Question #2

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What will come in place of the question mark (?) in the following letter series? F, I, N, U, D, ?

A. O

B. Q

C. P

D. R

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Correct Answer: Option A

Explanation:
F(6)+3=I(9), I+5=N(14), N+7=U(21), U+9=D(30→4), D+11=15→O. So O.

This question belongs to: Reasoning Letter Series

Question #3

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What will come in place of the question mark (?) in the following letter series? B, E, J, Q, ?

A. X

B. Z

C. W

D. Y

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Correct Answer: Option A

Explanation:
Differences: +3, +5, +7 – next +9 gives X.

This question belongs to: Reasoning Letter Series

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