Colors
Level
pending
Suppose there are four blocks arranged in a consecutive order. They need to be colored with the four colors blue, green, orange and red in such a way that the two same colors cannot be next to each other. What are the number of ways this can be done?
The answer is 108.
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1 solution
There are four blocks. As only the same colors can't be adjacent to each other, they can be done in 4X3X3X3=108 ways