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my gmat question on 1 october 2011

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Joined: 24 Sep 2011
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my gmat question on 1 october 2011 [#permalink] New post 03 Oct 2011, 00:00
question1 : a company has 8 telephone lines . if 4 telephones lines have to b made by company .what is the probability that they are each made on different line?
A 100/256
b 98/256
c 105/256
d 101/128
e 102/256

qquestion2: a book has 234 pages .if you open at random .what is the prob. is multiple of 12 but not multiple of 8?
A 1/117
b 11/234
c 5/117
d 3/117
e 7/117
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Manager
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Joined: 03 Mar 2011
Posts: 90
Location: United States
Schools: Erasmus (S)
GMAT 1: 730 Q51 V37
GPA: 3.9
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Re: my gmat question on 1 october 2011 [#permalink] New post 03 Oct 2011, 00:05
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Question 2:
All such pages are 12, 36, 60, 84, 108, 132, 156, 180, 204, 228.
So, the probability is 10/234=5/117.
The answer is (C)
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Re: my gmat question on 1 october 2011 [#permalink] New post 03 Oct 2011, 02:12
Expert's post
KaranSingh wrote:
question1 : a company has 8 telephone lines . if 4 telephones lines have to b made by company .what is the probability that they are each made on different line?
A 100/256
b 98/256
c 105/256
d 101/128
e 102/256

qquestion2: a book has 234 pages .if you open at random .what is the prob. is multiple of 12 but not multiple of 8?
A 1/117
b 11/234
c 5/117
d 3/117
e 7/117


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Re: my gmat question on 1 october 2011   [#permalink] 03 Oct 2011, 02:12
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