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Current Student
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Joined: 28 Dec 2004
Posts: 3387
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 14

Kudos [?]: 199 [0], given: 2

PS-2 [#permalink] New post 22 Oct 2005, 19:28
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A
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Director
Director
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Joined: 21 Aug 2005
Posts: 793
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Kudos [?]: 11 [0], given: 0

 [#permalink] New post 22 Oct 2005, 19:32
It should be any of these -> 5, -10, 2.5
5 is not in the list. So we have 2 numbers that are in the list.
Probability = 2/12 = 1/6
Current Student
avatar
Joined: 28 Dec 2004
Posts: 3387
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 14

Kudos [?]: 199 [0], given: 2

 [#permalink] New post 22 Oct 2005, 19:43
:oops:

I just solved half the problems I got wrong...

as they say the exam is 90% mind set....
VP
VP
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Joined: 13 Jun 2004
Posts: 1119
Location: London, UK
Schools: Tuck'08
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Kudos [?]: 33 [0], given: 0

 [#permalink] New post 22 Oct 2005, 20:20
yep same as Gsr

solution are 5, -10 and 5/2

5 is not in the set, however -10 and 5/2 are

there 12 numbers in the set so you have 2/12 = 1/6 chances to get them
  [#permalink] 22 Oct 2005, 20:20
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