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Compare the knowledge of persons X, Y, Z, A, B and C in relation to each other : 1. X knows more than A. 2. Y knows as much as B. 3. Z knows less than C. 4. A knows more than Y. The best knowledgeable person amongst all is:

  • A.X
  • B.Y
  • C.A
  • D.C

Answer: A

Correct answer: X

The statements give one chain: A knows more than Y, Y knows as much as B, and X knows more than A, so \( X > A > Y = B \). The remaining clue places C above Z but connects that pair to no one else, so C cannot be ranked against X at all. Of the four names offered, X is the only one standing above everyone it can be compared with.

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