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Which three letters have the same distance as they have in the alphabetical order although they have changed places ?

  • A.HMP
  • B.YLF
  • C.NQZ
  • D.QOE

Answer: B

Correct answer: YLF

The test is that the gaps between the three letters in the given series match the gaps between them in the alphabet.

In the series, Y is 3rd, L is 16th and F is 22nd, so the gaps are 13 and 6. In the alphabet Y is 25th, L is 12th and F is 6th, so the gaps are again 13 and 6.

Both intervals agree, though the letters have moved and the direction has reversed. None of the other groups reproduces both gaps.

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