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How many 4-letter words with at least one vowel can be constructed from the letters A, B, C, D, E, and F? (Note that A and E are vowels, any word is valid, not just English language words, and letters may be used more than once.)

 Dec 24, 2020
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To answer this question, you just need to subtract the number of words without vowels from the total number of words.

The total number of words is 6*6*6*6=1296

The total number of words without vowels is 4*4*4*4 = 256

Therefore, the answer to this question is 1296-256=1040 words.

 Dec 28, 2020

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