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If A + B means A is the mother of B; A - B means A is the brother B; A % B means A is the father of B and A x B means A is the sister of B, which of the following shows that P is the maternal uncle of Q?

  • A.Q - N + M x P
  • B.P + S x N - Q
  • C.P - M + N x Q
  • D.Q - S % P

Answer: C

Correct answer: P - M + N x Q

Read the chain left to right. P – M makes P the brother of M; M + N makes M the mother of N; N × Q makes N the sister of Q. So M is the mother of both N and Q, and P is M’s brother - that is, the brother of Q’s mother, which is exactly what maternal uncle means.

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