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Director
Joined: 13 Dec 2006
Posts: 510
Location: Indonesia

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15 Dec 2007, 18:05
71
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Guys,

Enclosed please find list of 55 different question with explanation. I got this from the GMATClub forum and found very impressive to learn most of the required commonly tested concepts.

I am returning back to the forum so that everyone can use it for hir/her benefit.

Amar

Please discuss specific questions in PS or DS subforums.

MODERATOR

Attachments

combinatroy_and_probability_132_914.doc [107.5 KiB]

Intern
Joined: 15 Aug 2007
Posts: 11

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15 Dec 2007, 23:20
3
KUDOS
thanks a lot, they are very helpful.
Intern
Joined: 08 Feb 2006
Posts: 1

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27 Dec 2007, 23:00
2
KUDOS
thanks for the stuff, its really helpful.
Manager
Joined: 13 Jan 2009
Posts: 170

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04 Feb 2009, 00:20
1
KUDOS
Thanks a lot, it is very helpfull!
Manager
Joined: 08 Apr 2009
Posts: 102

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19 May 2009, 11:34
Thanks...for the great work
Retired Moderator
Status: The last round
Joined: 18 Jun 2009
Posts: 1296
Concentration: Strategy, General Management
GMAT 1: 680 Q48 V34

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24 Jun 2009, 05:22
This was really helpful. Thanks a lot dear!!, such inputs are of great help!!
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Senior Manager
Joined: 25 Mar 2009
Posts: 301

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24 Jun 2009, 13:10
This is great. What's the difference b/w the two files?
Manager
Joined: 28 Jan 2004
Posts: 203
Location: India

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26 Jun 2009, 22:13
thx a lot.Looking for these for a long time.
Manager
Joined: 07 Jun 2009
Posts: 208

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27 Jun 2009, 06:07
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Intern
Joined: 17 Jun 2009
Posts: 28

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29 Jun 2009, 15:46
Thank you so much for your kindness
Senior Manager
Joined: 04 Jun 2008
Posts: 289

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11 Jul 2009, 14:04
thanks a lot
Manager
Joined: 05 Jul 2009
Posts: 181

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27 Jul 2009, 23:57
Thaks a lot
Intern
Joined: 14 Jul 2009
Posts: 12

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28 Jul 2009, 05:18
thanks, i hope this is helpful.
Intern
Joined: 03 Apr 2007
Posts: 5
Location: Canoga Park, CA
Schools: UCLA, CSU

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29 Jul 2009, 12:58
To the moderator

Can we include the download to the "Combinations, Permutations, and Probability - References" Sticky post.

Thanks
Manager
Joined: 05 Jul 2009
Posts: 181

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29 Jul 2009, 19:31
I got more than half of the questions wrong in the first try
Seems I need a lot of practice.
Manager
Joined: 13 Aug 2009
Posts: 201
Schools: Sloan '14 (S)

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19 Aug 2009, 11:21
Amardeep,

Thank you so much for your very helpful post. I was in the middle of compiling a list of probablity questions myself when I realized that you had already done so.

Thanks again!
Manager
Joined: 19 Feb 2009
Posts: 55

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13 Oct 2009, 11:03
Thanks alot!!
i needed something on this topic!
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Working without expecting fruit helps in mastering the art of doing fault-free action !

Manager
Joined: 13 Oct 2009
Posts: 55
Location: New York, NY
Schools: Columbia, Johnson, Tuck, Stern

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14 Oct 2009, 07:21
1
KUDOS
Thanks a lot friend, this can come in very handy.
Intern
Joined: 24 Oct 2009
Posts: 1
Location: Philly, PA

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24 Oct 2009, 08:56
This is great! Thanks for posting this!
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"In it to win it..."

Manager
Joined: 05 Jul 2009
Posts: 181

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25 Oct 2009, 21:03
I have a question regarding the #37 question and the answer given.

37. How many 5 digit numbers can be created if the following terms apply: the leftmost digit is even, the second is odd, the third is a non even prime and the fourth and fifth are two random digits not used before in the number?

a) 2520
b) 3150
c) 3360
d) 6000
e) 7500

37. The best answer is A.
The first digit has 4 options (2,4,6,8 and not 0), the second has 5 options (1,3,5,7,9) the third has 3 options (3,5,7 and not 2), the fourth has 7 options (10-3 used before) and the fifth has 6 options (10-4 used before). The total is 4*5*3*7*6=2520.

Now, it is not mentioned that a number cannot be repeated in for the 3rd digit. Say in the 2nd digit the number is 3 and so it is for the 3rd digit. The structure can be 233--, now for the 4th digit the option is 8 not 7.

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