CA Foundation · Quantitative Aptitude · Blood Relations
In a certain code, 'A + B' means 'A is the father of B', 'A - B' means 'A is the sister of B', and 'A × B' means 'A is the mother of B'. Which expression means 'P is the aunt (father's sister) of S'?
P - Q + S is correct. P is the sister of Q, and Q is the father of S, so P is the sister of S's father, which is the paternal aunt. The option with × makes Q the mother, giving a maternal aunt instead.
- AP - Q + SCorrect
- BP × Q - S
- CP + Q - S
- DP - Q × S
Explanation
P - Q means P is the sister of Q. Q + S means Q is the father of S. So P is the sister of S's father, which makes P the paternal aunt of S. In P - Q × S, Q is S's mother, so P would be the maternal aunt, which is wrong.
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One question tells you little. A timed set on Blood Relations shows your real accuracy, how long you take and where you lose marks.
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