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four uncles and three aunts

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four uncles and three aunts

by sanju09 » Tue Oct 20, 2009 5:22 am
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.



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by mridula » Tue Oct 20, 2009 5:52 am
C[/spoiler]
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by Ludacrispat26 » Tue Oct 20, 2009 5:56 am
S has 4 U and 3 A

F= 2 siblings

M= how many B?

1) F has to brothers

Since both of F's siblings are brothers, we now know that M has 5 siblings (2 B and 3 A)

Sufficient

2) M has 5 siblings

Insufficient. All we know is that there are 7 B/S altogether, which we knew from the prompt.


This looks exactly like a "C trap" to me. I'll go with A.
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