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if the membership of the drama club and music club are

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if the membership of the drama club and music club are [#permalink] New post 20 Jun 2006, 07:01
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if the membership of the drama club and music club are combined, what % of the combined membership will be male?

(1) of the 16 members of the drama club 15 are male
(2) of the 20 members of the music club, 10 are male

The answer is (e) and i think that there is some huge trick about this. can anyone pls help?
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 [#permalink] New post 20 Jun 2006, 08:15
I think the question should be worded better-
if there is the possbility that the SAME males could be in both clubs, you cant tell how many will be in the clubs combined...
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 [#permalink] New post 20 Jun 2006, 08:40
I am not sure you want to read more into the data than given... simplistically there are two clubs and need to calculate the % of males. If it had said "In a school, two clubs are ..." then we might need to worry a bit more..

If thats the case, C should do.

Maybe this is one of the "easy" GMAT questions... ?
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 [#permalink] New post 20 Jun 2006, 10:06
This is one of the tough gmat probs, I belive. since i got this at mid 20's range . In fact, this came after a super tough DS, which I answered correctly. However, I simply had gone and put c for this one.

however, degree of toughness is always relative!

I think we need to cosider the fact that one or more males can belong to both the clubs. Hence, the question can't be answered. Thanks for ur help guys.
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 [#permalink] New post 20 Jun 2006, 11:09
Thanks for the explanation. I didn't mean to say this was an easy one, but I didn't read between the line to figure it out.


ikaytas wrote:
This is one of the tough gmat probs, I belive. since i got this at mid 20's range . In fact, this came after a super tough DS, which I answered correctly. However, I simply had gone and put c for this one.

however, degree of toughness is always relative!

I think we need to cosider the fact that one or more males can belong to both the clubs. Hence, the question can't be answered. Thanks for ur help guys.
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 [#permalink] New post 20 Jun 2006, 15:57
cool buddy...take it easy..np!
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Re: GMAT Prep: DS : Club Membership. [#permalink] New post 20 Jun 2006, 22:13
ikaytas wrote:
if the membership of the drama club and music club are combined, what % of the combined membership will be male?

(1) of the 16 members of the drama club 15 are male
(2) of the 20 members of the music club, 10 are male

The answer is (e) and i think that there is some huge trick about this. can anyone pls help?


If the members overlap...it's E. but there's no such presumption...
looks nonsense
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 [#permalink] New post 24 Aug 2006, 16:43
I faced this question today - instinctively I knew I was heading to a trap because it was so easy (and it came after a couple of harder questions). But it's one of those questions where you're not too sure how much you should read into the question - and I simply couldn't get myself to 'assume' that members could be part of more than 1 club. Anyway, it's again a reminder that in DS we need to be really precise, and apply some general instinct - i.e. if it's too easy, look carefully for a trap, then consider possibilities you did not think of.

In this case, mathematically, it seemed like a set problem with overlapping sets, and that should have set off a trigger in my head that in any set related problems, we need to consider intersecting sets. Well, that did not happen, and I chose the wrong answer too.
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  [#permalink] 24 Aug 2006, 16:43
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