Mathematics, 20.07.2019 01:30 shenzhen10

English has 6 letters that can be vowels. this includes y, which can be either a consonant or a vowel; for this problem, we'll consider y a vowel. the other 20 english letters are always consonants. how many two-letter "words" can we make from these letters if we are required to use at least one vowel? (we aren't limited to words that have an actual meaning in english. thus, for this problem, we'll include nonsense "words" like qo, xy, and uz.)

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English has 6 letters that can be vowels. this includes y, which can be either a consonant or a vowe...

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