Question 727781
How many different three-topping pizzas are possible given eight different toppings?
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There isn't always "an equation," sometimes you have to figure it out.
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Assuming there's no mushrooms, mushrooms, mushrooms pizza, ie, the 3 toppings are different:
the 1st choice is 1 of 8
then 1 of 7, then 1 of 6
= 8*7*6 = 336 possibilities.