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01-02-2018
Mathematics

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In how many ways can the top six seeds (rankings) be chosen from nine players on the tennis team

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Аноним Аноним

01-02-2018

C[tex] \left \ {{6 \atop {9}} \right. [/tex]=[tex] \frac{9*8*7*6*5*4}{6!} [/tex]=84

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