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GMAT800: numbers


 
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netigen
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PostPosted: Mon May 12, 2008 6:57 pm    Post subject: GMAT800: numbers Reply with quote
Whats the best and fastest way to solve this
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akshatsingh
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PostPosted: Mon May 12, 2008 11:50 pm    Post subject: Reply with quote
I think E the answer.

If yes, put n=2 and n=10 to verify..
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netigen
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PostPosted: Tue May 13, 2008 1:23 pm    Post subject: Reply with quote
Ans is E but that probably is not the best approach or the right approach.
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akshatsingh
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PostPosted: Tue May 13, 2008 11:55 pm    Post subject: Reply with quote
i dont look for the best approach, i look for the correct answer Smile

As for another approach,you can solve this equation which would be lengthy. but you can be more confident if you simplfy the equation.
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