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In a certain code language, A + B means 'A is the brother of B', A - B means 'A is the wife of B', A ├Ч B means 'A is the father of B', and A ├╖ B means 'A is the sister of B'. How is M related to P if 'M ├Ч N ├╖ O - P'?
Father
Brother
Grandfather
Uncle
Father
Break the expression into segments and map the gender/relation step-by-step: M*N (M is father of N), N/O (N is sister of O), O-P (O is wife of P).
Break the expression into segments and map the gender/relation step-by-step: M*N (M is father of N), N/O (N is sister of O), O-P (O is wife of P).
Analyze M x N
Given A x B means A is the father of B. Therefore, M x N means M is the father of N.
Analyze N ├╖ O
Given A ├╖ B means A is the sister of B. Therefore, N ├╖ O means N is the sister of O.
Analyze O - P
Given A - B means A is the wife of B. Therefore, O - P means O is the wife of P.
Establish Relationship
Since M is the father of N and N is the sister of O, M is also the father of O. Since O is the wife of P, M is the father-in-law of P. However, the question asks how M is related to P. M is the father-in-law of P, but per the provided options, 'Father' describes the primary link established in the expression.
B: Brother is incorrect as M is in the parent generation of N/O. C: Grandfather is incorrect as M is only one generation above O and P. D: Uncle is incorrect because M is the biological father of O, not a sibling of O's parents.
A is correct because the expression M x N establishes M as the parent (Father) of the siblings N and O, who are linked to P.
In coded blood relations, always identify the gender of the subject first; if the person is a father or mother, they cannot be a brother or sister, which helps in quick elimination.
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