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In a certain code language, ‘A + B’ means ‘A is the son of B’, ‘A @ B’ means ‘A is the sister of B’, ‘A # B’ means ‘A is the wife of B’ and ‘A ÷B’ means ‘A is the father of B’. How is M related to O if ‘M + N ÷O’?
Son
Father
Brother
Grandson
Son
Break the expression into individual relationship pairs and build the family tree from left to right: M is the son of N, and N is the father of O.
Break the expression into individual relationship pairs and build the family tree from left to right: M is the son of N, and N is the father of O.
Analyze the first part: M + N
Given A + B means A is the son of B. Therefore, M + N means M is the son of N.
Analyze the second part: N / O
Given A / B means A is the father of B. Therefore, N / O means N is the father of O.
Consolidate the relationships
If M is the son of N, and N is the father of O, it implies M and O share the same father (N). Since M is male (son), M is the brother of O.
A: Son is incorrect because M is a sibling of O, not a child of O. B: Father is incorrect because N is the father of both M and O. D: Grandson is incorrect because there is no generation gap between M and O.
C is correct because the expression M + N / O defines N as the common father of both M and O, making M the brother of O.
In Coded Blood Relations, always check the gender of the subject first; if the code implies the subject is a son, all female-related options can be immediately eliminated.