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A # B means A is the son of B. A @ B means A is the sister of B. If P # Q @ R, how is P related to R?
Grandson
Nephew
Son
Brother
Nephew
Quick Trick: Break the expression into segments: P is son of Q (P # Q) and Q is sister of R (Q @ R). Since P is the son of Q, and Q is R's sister, P must be the nephew of R.
Break the expression into segments: P is son of Q (P # Q) and Q is sister of R (Q @ R). Since P is the son of Q, and Q is R's sister, P must be the nephew of R.
Analyze P # Q
Given A # B means A is the son of B. Therefore, P # Q implies P is the son of Q.
Analyze Q @ R
Given A @ B means A is the sister of B. Therefore, Q @ R implies Q is the sister of R.
Determine Relation
P is the son of Q, and Q is the sister of R. Therefore, P is the son of R's sister, making P the nephew of R.
A: P is the son of Q, not a generation below in the grandchild position. C: P is the son of Q, not the son of R. D: P is the son of Q, and Q is the sister of R, so P cannot be the brother of R.
B is correct because P is the son of Q, and Q is the sister of R, establishing P as the nephew of R.
In blood relation puzzles, always identify the gender of the subject first, then map the generation levels to eliminate incorrect options quickly.