Posted by marie on Monday, August 22, 2011 at 12:33pm.
using the fundamental counting principle with three or more groups of items
A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin,thick,crispy, or regular, and six choices of toppings (ground beef, sausage, pepperoni, bacon, mushroom, or onions). How many onetopping pizzas can be ordered?

math  MathMate, Monday, August 22, 2011 at 4:00pm
There are three choices of size, four choices of crust and six choices of toppings.
These choices are independent of each other, so by the principle of multiplication, the number of onetopping pizzas is:
N=3*4*6 = 72

math  Anonymous, Thursday, May 1, 2014 at 12:34pm
A pizza can be ordered with three choices of size (small, medium, or large), four choices of crust (thin, thick, crispy, or regular), and six choices of toppings (ground beef, sausage, pepperoni, bacon, mushrooms, or onions). How many different onetopping pizzas can be ordered?
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