Question 13 An electronics firm sells four models of stereo receivers, three CD

Question

Question 13

An electronics firm sells four models of stereo receivers, three CD decks, and six speaker brands. When the three types of components are sold together, they form a "system." How many different systems can the electronics firm offer?

169

72

13

36

Question 14

You have the assignment of designing color codes for different parts. Two colors are used on each part, but a combination of two colors used for one part cannot be rearranged and used to identify a different part. This means that if yellow and violet were used to identify a camshaft, violet and yellow (or any other combination of these two colors) could not be used to identify a pinion gear. If there are 55 combinations, how many colors were available?

11

15

9

13

An electronics firm sells four models of stereo receivers, three CD decks, and six speaker brands. When the three types of components are sold together, they form a "system." How many different systems can the electronics firm offer?

Explanation / Answer

Question 13:

The number of different systems possible here would be computed as: ( Using multiplication rule )

= 4*3*6

= 72

Therefore 72 is the correct answer here.

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