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# PS-2

Author Message
Current Student
Joined: 28 Dec 2004
Posts: 3383
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 15

Kudos [?]: 289 [0], given: 2

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22 Oct 2005, 20:28
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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Director
Joined: 21 Aug 2005
Posts: 791
Followers: 2

Kudos [?]: 25 [0], given: 0

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22 Oct 2005, 20:32
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
Joined: 28 Dec 2004
Posts: 3383
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 15

Kudos [?]: 289 [0], given: 2

### Show Tags

22 Oct 2005, 20:43

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

as they say the exam is 90% mind set....
VP
Joined: 13 Jun 2004
Posts: 1117
Location: London, UK
Schools: Tuck'08
Followers: 7

Kudos [?]: 45 [0], given: 0

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22 Oct 2005, 21:20
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
22 Oct 2005, 21:20
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