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The groups below take the alphabet in consecutive threes and may run past its end. Give the next group.
PQR, STU, VWX, ?

  • A.YZB
  • B.XYZ
  • C.YZ
  • D.YZA

Answer: C

Correct answer: YZA

Each triple is three consecutive letters, and the triples follow one another without a gap: P, Q, R then S, T, U then V, W, X. The next three letters are Y, Z and then the alphabet wraps round to A, giving YZA. The wrap is the whole point of the question; a series that simply ran out of letters would have no answer at all. Without the wrap the series would simply run out at X, so the presence of a question mark is itself evidence that the alphabet is meant to be treated as a loop.

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