Dave wants to buy a new collar for each of his 3 dogs. The collars come in a choice of 6 different colors. 1. How many selections of collars

Question

Dave wants to buy a new collar for each of his 3 dogs. The collars come in a choice of 6 different colors. 1. How many selections of collars for the 3 dogs are possible if repetitions of colors are allowed? 2. How many selections of collars are possible if repetitions of colors are not allowed?

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Bella 1 day 2021-09-10T05:29:28+00:00 1 Answer 0

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    2021-09-10T05:31:16+00:00

    Answer:

    1: 216 selections

    2: 120 selections

    Step-by-step explanation:

    1:

    we have 6 different colors and we can choose the same color repeatedly, so for each of the 3 dogs, we have 6 possibilities, so the number of combinations is 6*6*6 = 216 selections.

    2:

    we have 6 different colors and we can’t repeat a color, so the first collar has 6 possibilities, the second has 5 possibilities (one color was already chosen), and the third collar has 4 possibilities (two already chosen), so the number of selections is 6*5*4 = 120.

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