A country is divided into exactly 4 regions. Miki is sketching a map

We have 3 colors and 4 regions. The condition is that no two adjacent regions can have the same color. Further, Regions 1, 3, and 4 are not adjacent to each other, but all are adjacent to Region 2.

So, we can calculate the number of possible color schemes as follows:
1. Choose a color for Region 2. There are 3 choices here
2. Choose colors for Regions 1, 3, and 4. Each region can be one of the two remaining (non-Region 1) colors with no other restriction since they are all non-adjacent regions. There are 2*2*2 choices here

Multiplying the choices for Region 2 with the combinations for Regions 1, 3, and 4, we get 3×8=24 possible color schemes.

So, there are 24 possible color schemes for Miki's map.