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anonymous

  • 5 years ago

evaluate the expression 8c3

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  1. M
    • 5 years ago
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    8!/(8-3)!3!

  2. anonymous
    • 5 years ago
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    8!(8-3)=5!3!

  3. anonymous
    • 5 years ago
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    so it comes out to 8!(5!) and 3!

  4. M
    • 5 years ago
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    is this combination problem? forgot what C stands for

  5. anonymous
    • 5 years ago
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    would it come to 24c?

  6. M
    • 5 years ago
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    you just solve the factorials

  7. M
    • 5 years ago
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    so 8x7x6/3x2x1

  8. M
    • 5 years ago
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    8C3 is 8!/ (5! * 3!)

  9. anonymous
    • 5 years ago
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    224?

  10. M
    • 5 years ago
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    answer is 56

  11. M
    • 5 years ago
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    nCr = n! / ( (n-r)! * r!) is the formula

  12. anonymous
    • 5 years ago
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    so 56?

  13. anonymous
    • 5 years ago
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    for all of it?

  14. M
    • 5 years ago
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    yeah 336/6 = 56

  15. M
    • 5 years ago
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    8C3 = 56 :)

  16. anonymous
    • 5 years ago
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    ok thx

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