F and M are father and mother of S, respectively. S has four uncles and three aunts. F has two siblings. The siblings of F and M are unmarried. How many brothers does M have?
(1) F has two brothers.
(2) M has five siblings.
OA in next post.
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four uncles and three aunts
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sanju09
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uttam.albela
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Consider option 1.sanju09 wrote:F and M are father and mother of S, respectively. S has four uncles and three aunts. F has two siblings. The siblings of F and M are unmarried. How many brothers does M have?
(1) F has two brothers.
(2) M has five siblings.
OA in next post.
F has 2 siblings and both are male. So S has 2 uncles from his father side. So other 2 uncles must be from Mother side. So M has 2 brothers.
So option 1 is sufficient to solve it.
Consider option 2.
M has 5 siblings. this is just repeating the question. No new information. if father has 2 sibling and child has total 7 uncle+aunt. And none married so M has to have 5 siblings. We can not know how many bro and sis for M. Can not solve using this option.
So the answer is A.
