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anonymous

  • one year ago

9C3 over 11C3 Please help. I can't figure this out.

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  1. anonymous
    • one year ago
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    So in this expression, if C3 one term or are they seperate?

  2. anonymous
    • one year ago
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    It's a little 9 C and a little 3 over a little 11 C and a little 3

  3. anonymous
    • one year ago
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    so exponents?

  4. anonymous
    • one year ago
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    Yes.

  5. welshfella
    • one year ago
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    a quick way to do them is 9*8*7 ---- = 9C3 3*2*1

  6. welshfella
    • one year ago
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    oh if they are exponents forget the above!

  7. anonymous
    • one year ago
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    Ok.

  8. welshfella
    • one year ago
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    the way they are written could mean 9C3 is the number of combinations taken 3 at a time of 9 items

  9. anonymous
    • one year ago
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    How do I do the math?

  10. welshfella
    • one year ago
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    |dw:1439748080624:dw|

  11. welshfella
    • one year ago
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    c3 / c3 = 1

  12. anonymous
    • one year ago
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    Thank you!

  13. welshfella
    • one year ago
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    so that makes 9c3 / 11c3 = 9/11

  14. anonymous
    • one year ago
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    Thanks!

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spraguer (Moderator)
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