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Counting problem

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Master | Next Rank: 500 Posts
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by mjjking » Sun Mar 08, 2009 2:54 am
Thanks guys!
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Re: Help needed

by Vemuri » Sun Mar 08, 2009 5:36 am
Based on the answer choices, I narrowed down to 27(26^4)....26^5+26^4. But, I don't think my concept matches the answer choices. I was using combinations to solve this problem. 26c4+26c5. But this obviously does not seem to be correct. Anyone, please explain how this problem should be solved with the concept.
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by cramya » Sun Mar 08, 2009 1:18 pm
https://www.beatthegmat.com/permutation-t20602.html
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by Vemuri » Sun Mar 08, 2009 9:35 pm
Thanks Cramya. It just goes to show how much I need to improve on my concepts. I hope I can crack it with some practice.
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