Missy and Mussy are very messy sisters. Their dresser drawer consists of 43 white socks, 2 black socks, 23 blue socks and 8 red socks. What is the minimum number of socks they must remove from the drawer to be certain they have four socks of the same color?

They already have more than four of two colors. Why remove any? Do they want ONLY four of one color? If so, then remove four red.

What does this have to do with geometery?

To find the minimum number of socks they must remove from the drawer to be certain they have four socks of the same color, we can look at the worst-case scenario. In this case, we assume they first remove one sock of each color, resulting in a total of four socks.

Since there are 43 white socks, 2 black socks, 23 blue socks, and 8 red socks, removing the first four socks will guarantee that at least one color will have four socks remaining. Therefore, they must remove a minimum of 4 socks from the drawer to be certain they have four socks of the same color.