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'P # Q' means 'P is the husband of Q'. 'P $ Q' means 'P is the daughter of Q'. 'P % Q' means 'P is the mother of Q'. 'P @ Q' means 'P is the brother of Q'. How is T related to X in 'T@S$U%X'?

  • A.Husband
  • B.Sister
  • C.Brother
  • D.Wife

Answer: C

T is the brother of X. Decode each symbol: in T @ S, T is the brother of S. In S $ U, S is the daughter of U. In U % X, U is the mother of X. So U is the mother of both S and X, which makes S and X siblings. T is male (a brother) and is a sibling of S, so T is also a sibling of X, that is, X's brother.

Husband and wife are ruled out because no # relation links T to X, and sister is ruled out because the relation @ makes T male.

Read left to right: T is S's brother, S is U's daughter, and U is X's mother. Two children of one mother are siblings, and T is male.

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