2 SAT math questions

<p>This question was found online on the collegeboard website. If someone could please help me out, it would be great!
"There are 6 red, 6 brown, 6 yellow, and 6 gray scarves packaged in 25 identical, unmarked boxes, 1 scarf per box. What is the least number of boxes taht must be selected in order to be sure taht among the boxes selected 3 or more contain scarves of the same color?"</p>

<p>Well, worst case senario you pick 2 of each color before 3 of one and you pick the empty box before the others (I asuming the 25th box is empty because there are only 24 scarves). So, 8 (2 for each color times the four color types) plus one equals nine.</p>

<p>But it's two for each color, plus the empty box, plus another to get a third of a color. So ten.</p>

<p>Oh yeah, DUH. Would've figured that out had that been a real tests. Woops!</p>