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vivek.kapoor83: Legendary Member; Posts: 833; Joined: Mon Aug 04, 2008 1:56 am; Thanked: 13 times

by vivek.kapoor83 » Tue Jan 06, 2009 11:41 pm

bvgb

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Source: Beat The GMAT — Problem Solving | Tue Jan 06, 2009 11:41 pm

logitech: Legendary Member; Posts: 2134; Joined: Mon Oct 20, 2008 11:26 pmFollowed by: 25 members; Thanked: 237 times; GMAT Score:730

by logitech » Wed Jan 07, 2009 12:05 am

Getting all of the n questions correct is (1/2)^n

So if n=10 we will have 1/1024 which is less than 1/1000

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