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The local pizzeria is advertising a special where you can get a large pizza with up to 3 different toppings for only $10. If the pizzeria offers 11 different toppings, how many different types of pizza can you get in this special deal?

  • math -

    C(11,3) = 11*10*9/6

  • math -

    C(11,0) + C(11,1) + C(11,2) + C(11,3)

    the problem says "up to 3"

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