Finding socs becomes messy

Number of socks

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.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?
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