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A$B means A is the brother of B; A@B means A is the wife of B; A#B means A is the daughter of B; A*B…

P is Q’s wife, Q and T are siblings, and T is U’s daughter. U is thus Q’s father and P’s father-in-law.

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A$B means A is the brother of B; A@B means A is the wife of B; A#B means A is the daughter of B; A*B means A is the father of B. Assume siblings share both parents. Which expression shows U as P father-in-law?

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Correct answer A

P is Q’s wife, Q and T are siblings, and T is U’s daughter. U is thus Q’s father and P’s father-in-law.

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