Question

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

Answer 1

Combination - 11 choose 5

Answer 2

\[\frac{ 11! }{ 5!*(11-5)! }\]

Answer 3

http://www.mathwords.com/c/combination_formula.htm

Answer 4

So it would 11/30, i don't understand what the exclamation marks, explain.

Answer 5

I got the formula: 1089.....(7)/5!

Answer 6

factorial
for example, 5! = 5 * 4 * 3 * 2 * 1

multiplication of all the numbers down to 1

Answer 7

I got 115.5

Answer 8

I multiplied wrong its actually 462

Answer 9

Thanks DanJS

Answer 10

welcome