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Mathematics 9 Online
OpenStudy (anonymous):

permutations : 20! / 16! =

OpenStudy (anonymous):

Is that supposed to be 201/161?

OpenStudy (anonymous):

no thats how the question is

OpenStudy (anonymous):

Yeah, I know that now. So you want to know what that equals?

OpenStudy (anonymous):

20*19*18......./16*15*14.....

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