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DON'T UNDERSTAND

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by Suyog » Fri Nov 30, 2007 11:08 am
5C3 * 7C1 = 10 * 7 = 70

Ans D
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NEED HELP

by dferm » Fri Nov 30, 2007 11:23 am
U ARE INCORRECT....
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by camitava » Sat Dec 01, 2007 1:43 am
Sorry dferm, I am curious to know the OA, then! Because I am also agree with Suyog.
Correct me If I am wrong


Regards,

Amitava
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by dferm » Tue Dec 04, 2007 6:39 am
STILL DON'T UNDERSTAND BUT THE ANSWER IS 56.
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by chuongbill » Thu Dec 06, 2007 5:27 am
I also agree with the answer is 70, but If 56 is the official answer, I think it might be wrong.
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by Patrick_GMATFix » Wed Jul 21, 2010 6:24 am
dferm you unfortunately misread the answer.

This is a straightforward combinatorics. We have 5 women and 7 men. From these 3 women and 1 man will be selected. There are 10 ways to pick 3 women from 5. There are 7 ways to pick 1 man from 7. To do both, there are 10*7=70 ways. The OA to this is definitely D.

This question, a full explanation and step by step video solution are at GMATPrep Question 1509. To take drills with similar questions, set topic='Combinatorics' and difficulty='600-700 & 700+' in the Drill Generator

-Patrick
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by dferm » Sun Jul 25, 2010 10:24 am
You guys are right. I was getting confused with this question. But now I understand it.

Thanks to all.
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