Answered

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A 1×6 square unit rectangular grid has to be covered with six 1×1 square unit tiles. Three of the tiles are yellow, two are white, and one is blue. In how many ways can this task be done if:
a) there are no restrictions
b) no two neighboring tiles should be the same color
c) at least one pair of neighboring tiles are the same color

Sagot :

Answer: a is 60

Step-by-step explanation:

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