4 ms·

I have no idea but apparently the author thinks that is the correct answer. CGPT gave what is a correct answer iirc

• sowbug 4y ago
  It depends if you're using additive or subtractive coloring. Blue and yellow paint make green. Blue and yellow light make white. Old-style Christmas lights used paint or pigment over incandescent filaments to color the output. I'd say the more spectacular error for this answer was the human's. :)