How many strings are there of four lowercase letters that have the letter x in them?

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asked Mar 16, 2018 133k views

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Ynes · Answer 1 · 2018-03-21T02:42:46+0000

We can subtract from the number of strings of length 4 of lower case letters the number of string of length 4 of lower case letters other than x. Thus the answer is 264 − 254 = 66,351

How many strings are there of four lowercase letters that have the letter x in them?

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