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In a certain code language, 'A + B' means 'A is the mother 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 father of B'. Based on the above, how is 5 related to 3 if 5 - 2 × 4 + 3?

1. Father's sister
2. Mother's brother
3. Father's brother
4. Mother's sister

Correct answer: Mother's brother

Solution

From 5 - 2, 5 is the brother of 2. From 2 × 4, 2 is the wife of 4, so 4 is the husband of 2. From 4 + 3, 4 is the mother of 3. Therefore, 5 is the brother of 3's mother, i.e., 3's maternal uncle.

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