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Which of the following shows the relation that S is the father of Q?

  • A.S @ P $ Q
  • B.Q @ P % S
  • C.Q $ S @ P
  • D.None of these

Answer: D

Correct answer: None of these

Taking the options in turn: S @ P $ Q makes S the sister of Q’s father - an aunt. Q @ P % S makes P the son of S, so S is a parent of Q - but nothing says S is male, so “father” is not established. Q $ S @ P makes Q the father of S, the reverse of what is wanted. So the answer is none of these.

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