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In a certain code language, A + B means 'A is the sister of B', A - B means 'A is the husband of B', A × B means 'A is the mother of B', and A ÷ B means 'A is the brother of B'. How is P related to T if 'P × Q ÷ R - S × T'?
Father's sister
Father's mother
Mother's mother
Mother's sister
Father's mother
Break down the expression from left to right: P × Q (P mother of Q), Q ÷ R (Q brother of R), R - S (R husband of S), S × T (S mother of T). P is the grandmother of T.
Break down the expression from left to right: P × Q (P mother of Q), Q ÷ R (Q brother of R), R - S (R husband of S), S × T (S mother of T). P is the grandmother of T.
Deconstruct the expression
Given expression: P × Q ÷ R - S × T. Rules: A×B=Mother, A÷B=Brother, A-B=Husband.
Step-by-step mapping
1. P × Q: P is mother of Q. 2. Q ÷ R: Q is brother of R. (So P is also mother of R). 3. R - S: R is husband of S. 4. S × T: S is mother of T.
Determine relation
Since R is the father of T (as R is husband of T's mother S) and P is the mother of R, P is the mother of T's father.
A: Incorrect; P is the paternal grandmother. C: Incorrect; she is the father's mother. D: Incorrect; she is not the maternal grandmother.
B is correct because the sequence reveals P is the mother of R, and R is the father of T (R-S, S*T), making P the paternal grandmother (Father's mother).
In blood relations with complex expressions, always draw the gender (e.g., + for male, - for female) and marriage (=) and sibling (-) links to avoid confusion.
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