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Mathematics 15 Online
OpenStudy (kirbykirby):

Using the letters THURSDAY without replacement, how many 4-letter words end in Y?

OpenStudy (anonymous):

like asking " using the letters THURSDA how many 3 letter words can you make without replacement?"

OpenStudy (kirbykirby):

7 P 3? but how do we do if we did that, that we couldn't just tack on the Y the n on the first or last position?

OpenStudy (kirbykirby):

because if your making these 3-letter words.. would we not be counting the possibilities if Y could be at the beginning of the word or at the last position o_O?

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