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anonymous

  • one year ago

A local pizzeria offers 11 toppings for their pizzas and you can choose ant 5 five of them for one fixed prize. How many different types of pizzas can you order with 5 toppings? A. 462 B. 120 C. 55,440 D. 332,640

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  1. DanJS
    • one year ago
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    Combination - 11 choose 5

  2. DanJS
    • one year ago
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    \[\frac{ 11! }{ 5!*(11-5)! }\]

  3. DanJS
    • one year ago
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    http://www.mathwords.com/c/combination_formula.htm

  4. anonymous
    • one year ago
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    So it would 11/30, i don't understand what the exclamation marks, explain.

  5. anonymous
    • one year ago
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    I got the formula: 1089.....(7)/5!

  6. DanJS
    • one year ago
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    factorial for example, 5! = 5 * 4 * 3 * 2 * 1 multiplication of all the numbers down to 1

  7. DanJS
    • one year ago
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    |dw:1438104503373:dw|

  8. anonymous
    • one year ago
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    I got 115.5

  9. anonymous
    • one year ago
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    I multiplied wrong its actually 462

  10. anonymous
    • one year ago
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    Thanks DanJS

  11. DanJS
    • one year ago
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    welcome

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