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How many 3-letter "words" can be formed from the standard 26-letter alphabet, if the first letter must be a vowel (A, E, I, O, or U)? (We aren't necessarily talking about English words; something like EQX is perfectly valid here.)

 Jul 13, 2019
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There are  5  choices for the first letter, then 26 choices for the second letter, then 26 choices for the third letter.

 

so total number of possible words   =   5 * 26 * 26   =   3380

 Jul 13, 2019

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