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If A + B means A is the brother of B; A −B means A is the sister of B and A × B means A is the father…

M×N makes M the father of N; N−C makes N the sister of C; C+F establishes that C is male. Thus C is M’s son under the shared-parent convention.

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If A + B means A is the brother of B; A −B means A is the sister of B and A × B means A is the father of B. Which of the following means that C is the son of M?

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Correct answer D

M×N makes M the father of N; N−C makes N the sister of C; C+F establishes that C is male. Thus C is M’s son under the shared-parent convention.

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