Posted by lorra on .
chris has 7 red,11 yellow and 12 purple socks in a drawer.WHAT Is the least number of socks he must draw out to be sure of having at least one pair of socks the same color

math 
PsyDAG,
Interesting that Chris has odd numbers of socks for red and yellow.
If he picks one of each color, the next pick will match one of the three.