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Mathematics 10 Online
OpenStudy (anonymous):

I have 10 friends but I can only invite 7 to the party. How many ways I can do this?

OpenStudy (anonymous):

I think 10C7=120

Vocaloid (vocaloid):

yea

OpenStudy (anonymous):

are u sure

OpenStudy (anonymous):

10*9*8*7*6*5*4

Vocaloid (vocaloid):

yeah, I'm pretty sure 10C7 is right we have 10 people to choose from, and we want a party of 7 this is a combination problem since the order doesn't matter

OpenStudy (anonymous):

Yeay

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