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A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.

A, D, I, P, ?

  • A.U
  • B.R
  • C.W
  • D.Y

Answer: D

Correct answer: Y

The letters sit at the positions of the perfect squares: A is 1, D is 4, I is 9, P is 16, so the next is position 25, which is Y. The gaps between them grow by two each time - 3, 5, 7, then 9 - which is the same pattern seen from the other side.

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