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If A + B means A is the father of B; A −B means A is the brother of B; A%B means A is the wife of B and…

M×N makes M the mother of N. N%S and S+T identify N as the wife of T’s father, so N is treated as T’s mother and M as the maternal grandmother.

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If A + B means A is the father of B; A −B means A is the brother of B; A%B means A is the wife of B and A ×B means A is the mother of B, which of the following shows that M is the maternal grandmother of T?

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Correct answer A

M×N makes M the mother of N. N%S and S+T identify N as the wife of T’s father, so N is treated as T’s mother and M as the maternal grandmother.

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