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Barry has 4 wooden identically shaped and sized blocks. 2 are blue, 1 is red and 1 is green. How many distinct ways can barry arrange the 4 blocks in a row? Barry's friend Billie is colour-blind and cannot distinguish between red and green. How many of Barry's distinct arrangements would Billie see different?

 Feb 17, 2020
 #1
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a) I probably don't understand the question... does the order of the color matter? If not: there are 4! = 24 ways to arrange the blocks in a row??

 Feb 17, 2020
edited by AnimalMaster  Feb 17, 2020
 #2
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Yes but what are the combonations?

Guest Feb 23, 2020
 #3
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Answer is actually 12 distinct ways and Billie will only see 6.

 Feb 25, 2020

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