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Mathematics 14 Online
OpenStudy (anonymous):

How many ways can seven students line up for a class picture?

OpenStudy (anonymous):

@kropot72

OpenStudy (anonymous):

7=5040

OpenStudy (anonymous):

a 5040 b 210 c 28 d 7

OpenStudy (anonymous):

A

OpenStudy (anonymous):

@kropot72 what do u think it is

OpenStudy (kropot72):

There are 7 choices for the first position, 6 for the next position, 5 for the next, 4 for the next, and so on. Therefore the number of ways is 7 * 6 * 5 * 4 * 3 * 2 * 1.

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