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Mathematics, 12.02.2021 16:30 jojomgarcia01

How many ways are there to place 3 indistinguishable red chips, 3 indistinguishable blue chips, and 3 indistinguishable green chips in the squares of a 3 x 3 grid so that no two chips of the same color are directly adjacent to each other, either vertically or horizontally? A. 12,
B. 18,
C. 24,
D. 30 ,
E. 36

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