CA Foundation · Quantitative Aptitude · Blood Relations
A, B, C and D are four persons. A is the father of B. C is the sister of A. D is the mother of C. How many males are definitely identifiable among the four?
Only one male can be identified: A, because A is the father of B. C is a sister and D is a mother, so both are female, and B's gender is not stated, so B cannot be counted as male.
- A1Correct
- B0
- C2
- D3
Explanation
A is the father of B, so A is male. B's gender is unknown. C is a sister, so female. D is a mother, so female. Definite males: only A, so the count is 1. Option 0 is wrong as A is clearly male.
Did you get it right without looking?
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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