In your bedroom, you have a drawer with 2 red, 4 yellow, 6 purple, 8 brown, 10 white, 12 green, 14 black, 16 blue, 18 grey, and 20 orange socks. It is dark in your bedroom, so you cannot distinguish between the colors of the socks.

The question: How many socks do you need to take out of the drawer to be sure that you have at least three pairs of socks of the same color?

The answer: Click here!