Problem of the Month
Challenge yourself with Indiana's most intriguing mathematical puzzles.
June 2026
2025 INMC
Uploaded June 1st 2026
0 Solvers
What is the fewest number of colors needed to color all $7$ circles in the diagram shown, such that any three circles that form a scalene triangle with their vertices, must all have different colors? Note that the diagram depicts an equilateral triangle with its vertices, midpoints, and centroid having circles around them.
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