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anonymous

  • 5 years ago

C(7,4)

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  1. anonymous
    • 5 years ago
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    7! / 4! * 3! = 35

  2. anonymous
    • 5 years ago
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    how about C(10,7)

  3. anonymous
    • 5 years ago
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    10!/ 7! * 3!

  4. anonymous
    • 5 years ago
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    how do i solve it ?

  5. anonymous
    • 5 years ago
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    it is combination of r from n i.e C(n,r) =n!/ [ r! * (n-r)!]

  6. anonymous
    • 5 years ago
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    so plug in those numbers using the formula?

  7. anonymous
    • 5 years ago
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    we were taught to mulltiply them all out and then divide

  8. anonymous
    • 5 years ago
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    like 7 times 6 time 5 times 4 times 3 times 2 times 1 then divide by 4 times 3 times 2 times 1

  9. anonymous
    • 5 years ago
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    yes......

  10. anonymous
    • 5 years ago
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    okay

  11. anonymous
    • 5 years ago
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    so i tried one its was C(9,3) i got the answer 12 is that correct?

  12. anonymous
    • 5 years ago
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    it is 84

  13. anonymous
    • 5 years ago
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    okay i understand it now thank you

  14. anonymous
    • 5 years ago
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    u welcome

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spraguer (Moderator)
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