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Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. OAZ,SDF,UGL?

AVIJ

BTFG

CTGH

DWJR

Answer:

D. WJR

Read Explanation:

The letter-cluster that replaces the question mark (?) is WJR.

We analyze the positional movement of each letter position in the alphabet (A = 1, B = 2, ..., Z = 26):

1st Letter Pattern (O → S → U → ?):

  • O (15) +4+ 4 \rightarrow S (19)

  • S (19) +2+ 2 \rightarrow U (21)

  • U (21) +2+ 2 \rightarrow W (23) (Pattern increases by +4+4, then alternates +2+2)

2nd Letter Pattern (A → D → G → ?):

  • A (1) +3+ 3 \rightarrow D (4)

  • D (4) +3+ 3 \rightarrow G (7)

  • G (7) +3+ 3 \rightarrow J (10)

3rd Letter Pattern (Z → F → L → ?):

  • Z (26) +6+ 6 \rightarrow F (6) (26 + 6 = 32 \rightarrow 32 - 26 = 6)

  • F (6) +6+ 6 \rightarrow L (12)

  • L (12) +6+ 6 \rightarrow R (18)


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