'P @ Q' means 'P is the sister of Q' 'P & Q' means 'P is the mother of Q' 'P # Q' means 'P is the husband of Q' If 'A # B & C @ D # E' then how is E related to B?
Explanation:
A # B → A husband of B. B & C → B mother of C. So C is daughter of A and B. C @ D → C sister of D, so D is son of A and B. D # E → D husband of E. Hence E is wife of D (son of B), so E is daughter-in-law of B.
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