Difficulty: Medium
Correct Answer: P @ Q $ T # U * W
Explanation:
Decode option (a) P @ Q ⇒ P is wife of Q ⇒ Q is P’s husband. Q $ T ⇒ Q is brother of T ⇒ Q and T are siblings. T # U ⇒ T is daughter of U ⇒ U is a parent of T. U * W ⇒ U is the father of W ⇒ U is confirmed male. Since Q & T are siblings and T is child of U, Q is also child of U. Thus U is father of Q, who is P’s spouse ⇒ U is P’s father-in-law.
Why others fail (b)–(d) do not anchor U as the father of P’s spouse.
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