Explanation:
The father of X's father is X's grandfather. The granddaughter of X's grandfather is X's sister (or cousin). Y is the husband of X's sister. Therefore, Y is the brother-in-law of X.
A + B means 'A is the father of B;
A × B means 'A is the brother of B;
A + B means 'A is the sister of B;
Which of the following expressions shows that H is the grandson of P?
Explanation:
Option A starts with P as a father (generation +2), moving down through K and D to H as a male (via x M), fulfilling the grandson criteria perfectly.
Explanation:
A's son is the brother of D, and since C and D are sisters, A is the father of A's son, D, and C. Since B is the brother of A, B is the paternal uncle of C.
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