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27 Jun 2022, 14:15
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Difficulty:
45%
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67% (02:07) correct
33%
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based on 45
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A daily store stocks two sizes of mugs, each in four colors: black, green, yellow and red. The store packs the mugs in packages that contain either three mugs of the same size and the same color or three mugs of the same size and of three different colors. If the order in which the colors are arranged is not considered, how many different packings of the types described above are possible?
(A) 4
(B) 10
(C) 16
(D) 20
(E) 30
(A) 4
(B) 10
(C) 16
(D) 20
(E) 30
27 Jun 2022, 14:29
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Multiplication principle. I did combination as well when n > k and there’s no repetition and the order doesn’t matter. The addition principle was applied as well.
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