In a certain code, ‘A @ B’ means ‘A is the father of B’; ‘A # B’ means ‘A is the husband of B’; ‘A $ B’ means ‘A is the daughter of B’; ‘A % B’ means ‘A is the sister of B’. Which of the following expressions means that P is the father-in-law of S?
Correct answer A. P @ Q % R # S
Explanation
In P @ Q % R # S, P is the father of Q, Q is the sister of R, R is the husband of S, so P is the father-in-law of S. The other expressions make P the grandfather, granddaughter or niece of S.
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