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Mathematics 20 Online
OpenStudy (anonymous):

Over the next week you want to watch a movie a day. In how many ways can this be done if you have 8 movies? A. 56 B. 6,720 C. 40,320 D. 2,097,152

OpenStudy (kropot72):

There are 8 ways to select the first movie. Having selected the first there are 7 ways to select the second, 6 ways to select the third, and so on. Therefore the total number of ways is given by: \[\large Total\ number\ of\ ways=8\times7\times6\times5\times4\times3\times2\times1=you\ can\ calculate\]

OpenStudy (anonymous):

Thanks

OpenStudy (kropot72):

You're welcome :)

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