a1ly5nLamkauscessier a1ly5nLamkauscessier

15-11-2016
Mathematics

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If A pizza restaurant offers 9 choices of vegetarian toppings for pizza In how many ways can you choose 4 toppings

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mrinconj mrinconj

15-11-2016

You have to pay attention in this:
- The order doesn't matter
- No repetition
- You can not chose all available elements (just 4)
So in this case your formula must be: 9C4= 9!/(4!*(9-4)!) = 126 ways

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