How many ways to color the 4 regions using 3 different colors, if no two neighboring regions can have the same color?

In mathematics, the four color theorem, or the four color map theorem, states that, given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions of the map so that no two adjacent regions have the same color.

Explanation:

god of miracles. or walls.