Plutonians have three feet. Suppose the Plutonian Orfkleeg has a box with an infinite number each of red, blue, yellow, green, and white socks. Plutonian etiquette requires that Orfkleeg wear three socks of the same color. Its dark, and Orfkleeg cant see. What is the minimum number of socks Orfkleeg needs to take from the box to be sure there will be a suitable triplet of socks?