$$A + B$$ means ‘A is the father of B’:
$$A - B$$ means ‘A is the sister of B’;
$$A \times B$$ means ‘A is the brother of B’;
$$A \div B$$ means ‘A is the daughter of B’.
If, $$R + S \times T - V \div U$$, then how is S related to U?
In the diagram, Circle shows the female, square shows the male, vertical lines show the generation, single horizontal line shows the brother/sister and double horizontal lines show the couple.
From the diagram,
'S' is the son of 'U'.
$$\therefore$$ The correct answer is option A.
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