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Coloring

Let \(A=\{1,2,3,4,5,6,7\}\). We purpose to color all the subsets of \(A\) which contains 3 elements so that the condition below is taken into consideration:

"Every pair of non-intersecting subsets has different colours"

Clarification: If B and C are disjoint subsets of A, then B has a different colour from C.

What is the least possible number of colours to do that?

Note by Ißra Jörg
7 months, 3 weeks ago

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