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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 son of B’ A ÷ B means ‘A is the father of B’ Based on the above, how is E related to M if ‘E % F ÷ G – H @ M’?
Brother
Father
Mother’s brother
Mother’s father
Mother’s brother
Break the expression into individual pairs: E is the son of F, F is the father of G, G is the brother of H, and H is the mother of M. Follow the chain: F is the father of G and E (both siblings), and H is the mother of M, making E the maternal uncle of M.
Break the expression into individual pairs: E is the son of F, F is the father of G, G is the brother of H, and H is the mother of M. Follow the chain: F is the father of G and E (both siblings), and H is the mother of M, making E the maternal uncle of M.
Analyze the expression E % F ÷ G – H @ M
Break the expression into individual relationship links: 1) E % F means E is the son of F. 2) F ÷ G means F is the father of G. 3) G – H means G is the brother of H. 4) H @ M means H is the mother of M.
Build the family tree
From (1) and (2), E and G are siblings because they share the same father F. Since E is the son of F, and G is the sibling of H, E is the brother of G and H. From (3) and (4), H is the mother of M.
Establish the relationship between E and M
H is the mother of M. E is the brother of H. Therefore, E is the brother of M's mother, which is the mother's brother (Maternal Uncle).
A: Brother is incorrect as E is the uncle of M, not a direct sibling. B: Father is incorrect as F is the father of E and H. D: Mother's father is incorrect as F is the grandfather of M, not E.
C is correct because E is the brother of H, and H is the mother of M, making E the maternal uncle of M.
In blood relation coding, always draw the tree from left to right; focus on the gender of the subject (E) to quickly eliminate opposite-gender options.
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