If red is blue and blue is yellow what color is green

Advice: what kind of drawing tablets is the best for beginners like me? make sure it is under $50, . i just started drawing on one today (in school) and will continue for about a month or so.

In what way did van gogh put paint on his canvas when he painted wheatfield with crows? he put his paint on the canvas using very thin strokes of paint. he put his paint on the canvas using very well blended strokes of paint. he put his paint on the canvas as thick as toothpaste.

What is the time period of this painting?