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Mathematics 20 Online
OpenStudy (anonymous):

How many different seating arrangements are there for 5 students in 5 seats? 60 80 100 120

OpenStudy (inkyvoyd):

Hint: order matters You are looking for 5P5

OpenStudy (anonymous):

like how do i do it cause i don't know!!

OpenStudy (inkyvoyd):

Ok. 5 choices for dude 1, 4 choices for dude 2 (because dude 1 took up a chioc), 3 choices for dude 3 (cause dude 1 and dude 2 took up 2 choices), 2 choices for dude 4 (cause dudes 1-3 took up 3 choiecs), and only one choice for dude 5 (because dudes 1-4 took up all the other seats). Then, we multiply the choices for each dude and get our anser

OpenStudy (anonymous):

so 5x4x3x2x1?

OpenStudy (inkyvoyd):

Yup.

OpenStudy (anonymous):

thanks these questions keep comfusing me

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