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Read the following information carefully and then answer the question given below.

1. A∆B means A is mother of B.
2. A@B means A is sister of B.
3. A*B means A is father of B.
4. A#B means A is brother of B.

Which of the following means R is uncle of T ?

  • A.R*P#S∆Q@T
  • B.S*P#R*U#T
  • C.P*R#Q@S*T
  • D.P*R@Q@S*T

Answer: C

The expression meaning R is uncle of T is P*R#Q@S*T.

Read it pair by pair: P*R means P is father of R; R#Q means R is brother of Q; Q@S means Q is sister of S; S*T means S is father of T. So R is a brother of T's father S, and a father's brother is an uncle.

  • R*P#S∆Q@T: R is father of P; P is brother of S, who is mother of Q, and Q is sister of T. So R is T's grandfather.
  • S*P#R*U#T: R is father of U, and U is brother of T, so R is T's father.
  • P*R@Q@S*T: R@Q makes R a sister, so R would be T's aunt, not uncle.

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