18-07-2017
Mathematics

contestada

A pizza place offers 3 different cheeses and 12 different toppings. In how many ways can a pizza be made with 1 cheese and 3 toppings

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Аноним Аноним

18-07-2017

3 times the number of combinations of 3 from 12 (12C3)

12C3 = 12*11*10 / 3*2*1 = 220

so number of 1 cheese + 3 toppings = 3*220 = 660

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