Solve this multiple-choice question and choose the correct option.

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Symbolic relations: Choose the expression that makes M the wife (spouse) of Q. Operator meanings: A $ B ⇒ A is the father of B A # B ⇒ A is the sister of B A * B ⇒ A is the daughter of B A @ B ⇒ A is the brother of B Which option ensures “M is the wife of Q”?

Difficulty: Medium

Q $ R # T @ M
Q $ R @ T # M
Q $ R * T # M
Q $ R @ T * M

Correct Answer: Q $ R @ T * M

Explanation:

Work through option (d) Q $ R ⇒ Q is father of R. R @ T ⇒ R is brother of T (siblings). T * M ⇒ T is daughter of M ⇒ M is a parent of T (and of R, since R and T are siblings).

Conclusion With Q the father and M the other parent of their children, M is Q's wife.

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