Question

assume that you are to pick 3 cars from the motor pool, which contains 8 subcompact cars, 9 compact cars, and 4 midsize cars.
How many ways can you pick the cars so not all are the same size?

Answer 1

please help

Answer 2

8*9*4=288
since you can only pick one of each car.

Answer 3

thats wrong

Answer 4

wait, misread

Answer 5

do you know how to do this?

Answer 6

21C3-8C3-9C3-4C3

Answer 7

21C3 is the total possibilities

Answer 8

rest are just choosing 3 of one type of car