Problem

Three persons have to figure out how to divide barrels with milk so that everybody gets a equal number of barrels and an equal amount of milk. There are twenty one barrels total. Seven of them are full of milk. Seven other barrels are half filled, and the remaining seven barrels are empty. Please help them to divide the barrels fairly.

Please select numbers in boxes below. Once you selected all three numbers for each individual, the computer verifies you solution.

	full	half	empty
	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7
	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7
	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7	-?- 0 1 2 3 4 5 6 7

The idea of this puzzle is from the book 'Mathematics. 3rd Grade.' by L. G. Peterson. Yuventa, Moscow.

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