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In a certain code language, 'P + Q' means 'P is the brother of Q', 'P - Q' means 'P is the daughter of Q', 'P x Q' means 'P is the wife of Q' and 'P ÷ Q' means 'P is the son of Q'. How is A related to E if 'A + B - C x D ÷ E'?
Brother
Daughter's son
Son
Son's son
Son's son
Break down the expression into smaller parent-child segments: A is the brother of B, B is the daughter of C, C is the wife of D, and D is the son of E.
Break down the expression into smaller parent-child segments: A is the brother of B, B is the daughter of C, C is the wife of D, and D is the son of E.
Analyze the expression A + B - C x D / E
Break the expression: A + B (A is brother of B), B - C (B is daughter of C), C x D (C is wife of D), D / E (D is son of E).
Map the family relations
Since A and B are siblings (A is male), and B is the daughter of C, then A is also the son of C. C is married to D, making D the father of A. D is the son of E, which means E is the parent (grandfather/grandmother) of A.
Final Conclusion
If A is the son of D, and D is the son of E, then A is the grandson of E. Looking at the options provided, 'Son's son' is equivalent to grandson.
A: Brother is incorrect as A is a generation below D; B: Daughter's son is incorrect because A is D's son, not daughter's son; C: Son is incorrect as A is the son of D, not E.
D is correct because A is the son of D, and D is the son of E, therefore A is the son's son (grandson) of E.
In blood relation problems, always draw a quick generation diagram. Mark males with (+) or square boxes and females with (-) or circles to avoid gender-related confusion.
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