If Ming wants a tertiary color, she should combine

red and orange because tertiary colors are combinations with primary and secondary colours.

A Tertiary Color is color made up of combining the Primary and the Secondary colors with each other.

Tertiary Color is called the Intermediate color.

If full saturation of primary color is mixed with the half saturation of secondary color, a Tertiary Color is formed.

Six Tertiary Colors are there. Ming can combine any one of the following colors

1) Red-Orange

2) Yellow-Orange

3) Yellow-Green

4) Blue-Green

5) Blue-Violet

6) Red-Violet