Can you turn 6 2 10 7 into a unicolor configurationSolutionW

Can you turn (6, 2, 10, 7) into a unicolor configuration?

Solution

Whenever at least three out of the four numbers (g, y, r, b) are equal modulo 4, the configuration (g, y, r, b) can be turned into a unicolor configuration

here( 6 ,2 & 10 ) modulo 4 are equal .

hence

(6, 2, 10, 7) can be turned into a unicolor configuration