enigma123 wrote:
The Carson family will purchase three used cars. There are two models of cars available, Model A and Model B, each of which is available in four colors: blue, black, red, and green. How many different combinations of three cars can the Carsons select if all the cars are to be different colors?
A. 24
B. 32
C. 48
D. 60
E. 192
Take the task of selecting cars and break it intostages .
Stage 1 Select 3 different colors.
Since the order in which we select the colors does not matter, we can use
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