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natali 33 [55]
3 years ago
8

A pizza parlor offers 4 different pizza toppings. How many different kinds of 2-topping pizzas are available?

Mathematics
2 answers:
Galina-37 [17]3 years ago
6 0
Order does not matter so use "n choose k" formula is used to find number of unique combinations.

c=n!/(k!(n-k)!)  where n is total possible choices and k is number of selections.

c=4!/(2!(4-2)!)

c=4!/(2!2!)

c=24/(2*2)

c=24/4

c=6

So there are 6 different two topping options when there are four different toppings to choose from.
Murrr4er [49]3 years ago
3 0
There are six different options
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