In a certain code, ‘A @ B’ means ‘A is the mother of B’; ‘A # B’ means ‘A is the husband of B’; ‘A $ B’ means ‘A is the wife of B’; ‘A % B’ means ‘A is the son of B’. Which of the following expressions means that P is the uncle of S?
Correct answer B. P % Q @ R @ S
Explanation
In P % Q @ R @ S, P is the son of Q, Q is the mother of R, R is the mother of S, so P is the uncle of S. The other expressions make P the grandson, great-grandson or brother-in-law of S.
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