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Old 2007 October 26th, 09:41 AM   #51 (permalink)
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Why only GMAT, these links are indeed useful for the GRE test takers (includes me) as well.
Thanks for the same!
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Old 2007 October 29th, 08:24 PM   #52 (permalink)
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Quote:
Originally Posted by mevz View Post
Let the 3 Asians b considered as one person/seat
Similarly let 2 Europeans b considered as one person/seat
So now we have 3 people (1 Asian,1 European and 1 American) to arrange on 3 seats.
=3!=6
But the 3 Asians and 2 Europeans can sit in 3! and 2! different ways

So for each 3! arrangements,there r 6 possiblities for Asains and 2 possiblities for Europeans.

i.e. 3!* 3!* 2!=6*6*2=72

Let me know the correct answer...
Hey,
Came across this question: Possible ways to arrange 3 asians, 2 europeans and an american if the asians and eurpoeans want to sit together.

The explaination above seems good, except that one thing confused me a bit: since you consider asiand and europeans as a single entity should you not consider them swapping seats between them. so I seem to think that the answer should be 72 * 2 = 144. Am I missing something here?

Thanks! (pls be gentle, first posting on the forum
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Old 2007 October 30th, 07:24 AM   #53 (permalink)
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Thanks...a great resource for one of the most advanced topics in GMAT Math.

Here is a link to a site with more info on P&C. Nice one as well.

Permutations and combinations - Topics in precalculus

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Old 2008 January 19th, 06:14 PM   #54 (permalink)
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i think its better to concentrate material what we have.. beacuse more contents make confused .. to me atleast..
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Old 2008 February 6th, 01:32 PM   #55 (permalink)
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Old 2008 March 21st, 11:59 PM   #56 (permalink)
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This clears up so many of my questions about probability on the GMAT. Thanks!
 
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Old 2008 May 1st, 03:07 AM   #57 (permalink)
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Quote:
Originally Posted by TwinnSplitter View Post
Thanks for these great resources.

My answers to that document are as follows, anybody else who did them let me know what you got:
B
C
A
C
D (the way I did this took kind of long, if somebody else could let me know how they did it I'd appreciate it)
B
B
E
E
D
B
D
E
E
B
E
A
D
D
Are we all comfortable using these answers? If not, which ones have we decided to change?
1 b

2C3A4C5d6B7B8E9E10D11B12D13E14E15B16E17A18D
19
d
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Old 2008 June 30th, 03:48 PM   #58 (permalink)
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Yep, i guess this forum is really nice.
In my country, there is only a few forum that discuss mathematics.
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Old 2008 July 7th, 02:39 AM   #59 (permalink)
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Reflections Vol20, No3, Aug 95
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Old 2008 August 18th, 06:12 PM   #60 (permalink)
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the post was years back but the material is very useful ..thanks!!
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