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OpenStudy (anonymous):
How many different 12-member juries can be made from 150 people?
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OpenStudy (dan815):
same idea
OpenStudy (dan815):
u know this one now right
OpenStudy (anonymous):
one sec
OpenStudy (anonymous):
150!/(12!(138!))
OpenStudy (dan815):
yes
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OpenStudy (dan815):
there is a button for caculators that lets you type nCr
OpenStudy (dan815):
do you know that nPr formula?
OpenStudy (anonymous):
I got math error
OpenStudy (dan815):
do u ?
OpenStudy (anonymous):
yeah
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OpenStudy (dan815):
well basically choose formula is nPr/r! because nPr includes different arrangements, and how many different arrangements are there? that is the number of spots! or r! if r is the number of spots
OpenStudy (anonymous):
I dont know? @dan815
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