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use four different colors to color the four rectangles A, B, C, and D as shown in the figure. No two rectangles sharing the same edge can be the same color. How many ways are there to color the rectangles?

 Jun 26, 2018
 #1
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Here's my best effort

 

We have 4 ways to color A, 3 ways to  color  B, 2 ways to color C  and one way to color D

 

So.....the the total ways to color the rectangles  = 4 * 3 * 2 * 1  = 4!  =  24 ways

 

 

 

cool cool cool

 Jun 26, 2018
edited by CPhill  Jun 26, 2018

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