Read the following information carefully to choose the best option for the question:

'P % Q' means that 'P is the sister of Q', 'P + Q' means that 'P is the son of Q', 'P × Q' means that 'P is the husband of Q', 'P - Q' means that 'P is the brother of Q'.

Which of the following means 'A is the son-in-law of G'?

Step-by-Step Breakdown

Let's decode $A \times U \% S + G$ from left to right:

1. $A \times U$: A is the husband of U.

• Inference: A is male ($+$) and U is female ($-$). They are a married couple.

2. $U \% S$: U is the sister of S.

• Inference: U and S are siblings.

3. $S + G$: S is the son of G.

• Inference: G is the parent of S. Since U and S are siblings, G is also the parent of U.

Conclusion for Option 4:

Since U is the daughter of G, and A is married to U ($A \times U$), A is the son-in-law of G. This satisfies the condition perfectly.

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Why the other options are incorrect:

• Option 1 ($A \times U + S \times G$): $U + S$ means U is the son of S. But $A \times U$ means A is the husband of U. A male cannot be the husband of another male (U) under standard blood relation problem conventions.
• Option 2 ($A \times S \% U \times G$): $U \times G$ means U is the husband of G. $S \% U$ means S is the sister of U. $A \times S$ means A is the husband of S. This would make A the brother-in-law of U, not the son-in-law of G.
• Option 3 ($A - S + U \times G$): $A - S$ means A is the brother of S. This leaves A in the same generation as S, making a son-in-law relationship with G impossible here.