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Question

Jorge wants to order an ice-cream sundae. The ice-cream parlor has 15 ice-cream flavors, 8 sauces, and 7 toppings. Jorge can select one ice-cream flavor, one sauce, and one topping. How many different combinations of ice-cream sundaes could Jorge choose from?

Answer 1

15*8*7=840

One ice cream flavor can be combined with one of 8 sauces which gives 8 combinations and each of the 8 combinations can be combined with one of the 7 toppings which gives 56 combinations so far with one ice cream flavor. You can do this with each of the 15 ice cream flavors for a total of 15*56=840 combinations of ice cream sundaes.