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If each of four small triangles are to be filled with one of four colors such that no two adjacent triangles are same..

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The triangle shown below consists of four small triangles of equal area. If each of the four small triangles are to be filled with one of the four colors (red, green, blue and yellow), such that no two adjacent triangles can have the same color, then find the number of possible combinations.

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posted Jul 14, 2018 by anonymous

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