Question 433152
 A pizza shop offers 3 different toppings and 2 types of crust. How many possible types of pizza can you order if each pizza can have one, two, or three different toppings?
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# of 1 topping pizza: 2*3 = 6
# of 2 topping pizzas: 2*3C2 = 2*3 = 6
I of 3 topping pizzas: 2*3C2 = 3*1 = 3
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Total number: 6+6+3 = 15
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cheers,
Stan H.
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