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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 x B' means 'A is the mother of B', and 'A ├╖ B' means 'A is the son of B'. How is Q related to S if 'Q x R - S + T ├╖ U'?
Sister
Mother
Husband's mother
Daughter
Husband's mother
Break the expression into individual relations and map them step-by-step. Focus on the gender indicators provided by the symbols.
Break the expression into individual relations and map them step-by-step. Focus on the gender indicators provided by the symbols.
Analyze the expression T ├╖ U
A ├╖ B means A is the son of B. So, T is the son of U.
Analyze the expression S + T
A + B means A is the sister of B. So, S is the sister of T.
Analyze the expression R - S
A - B means A is the husband of B. So, R is the husband of S.
Analyze the expression Q x R
A x B means A is the mother of B. So, Q is the mother of R. Since R is the husband of S, Q is S's husband's mother, which is Mother-in-law.
A: Sister is incorrect as Q is a parent generation relative; B: Mother is incorrect as Q is the mother of R, not S; D: Daughter is incorrect because the relation is up the generational tree.
C is correct because based on the relationships defined (Q is mother of R, R is husband of S), Q is the mother of S's husband, making Q the mother-in-law of S.
In blood relation questions with symbols, always draw the tree diagram and mark genders (Male +, Female -) to avoid confusion about who is the spouse vs the child.