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In a certain code language, ‘R + S’ means ‘R is the mother of S’, ‘R @ S’ means ‘R is the husband of S’, ‘R # S’ means ‘R is the sister of S’ and ‘R % S’ means ‘R is the father of S’. How is N related to P if ‘M # N + O % P @ Q # T’?
Father’s sister
Mother
Sister
Father’s mother
Father’s mother
Analyze the chain from left to right: M is sister of N, N is mother of O, O is father of P, P is husband of Q, and Q is sister of T. Trace the lineage to find N's relation to P.
Analyze the chain from left to right: M is sister of N, N is mother of O, O is father of P, P is husband of Q, and Q is sister of T. Trace the lineage to find N's relation to P.
Deconstruct the expression
Given expression: M # N + O % P @ Q # T. Relations: # is sister, + is mother, % is father, @ is husband.
Establish the family tree
M # N (M is sister of N); N + O (N is mother of O); O % P (O is father of P). This implies N is the mother of O, and O is the father of P.
Identify the relationship between N and P
Since N is the mother of O, and O is the father of P, N is the grandmother (specifically the father's mother) of P.
A: N is not the sister of P's father (O). B: N is the grandmother, not the direct mother of P. C: N is the grandmother, not the sister of P.
D is correct because based on the sequence, N is the mother of O, and O is the father of P, making N the paternal grandmother of P.
In blood relation coded questions, always draw the gender (+ for male, - for female) above the names to avoid confusion regarding maternal or paternal sides.
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