How many options

Question

A certain model of automobile is available in seven exterior colors, four interior colors, and three interior styles. In addition, the transmission can be either manual or automatic, and the engine can have either four or six cylinders. How many different versions of the automobile can be ordered?

Answer 1

They multiply. That is, assuming that the auto manufacturer offers all possible combinations the answer is

(7 exterior colors)x(4 interior colors)x(3 interior styles)x(2 transmission types)x(2 engine types)

7x4x3x2x2 = 336