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Gmat Prep: Combination

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Re: Gmat Prep: Combination

by Vemuri » Sun May 03, 2009 3:56 am
number of 4 letter codes possible are 26^4
number of 5 letter codes possible are 26^5

Hence, the maximum possible = 26^4+26^5 ==> 26^4(1+26) ==> 27(26^4)
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