Posted by **Ben** on Monday, May 7, 2012 at 7:52pm.

You run pizza shop and have 8 different toppings that a customer can order. The customer can order any combination of topping including none but they cannot have double of any toppings. How many different pizza combinations can be ordered?

- Math -
**Reiny**, Monday, May 7, 2012 at 8:01pm
This becomes a question of the number of subsets with 8 elements.

number of subsets = 2^8 or 256

Notice that this would include the nullset, correponing with "no items" and the the set of all elements, your "loaded pizza"

- Math -
**Ben**, Monday, May 7, 2012 at 8:03pm
Thank you!

- Math -
**Reiny**, Monday, May 7, 2012 at 8:07pm
welcome

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