Socks
Level
2
Cathy has twelve black socks and twelve white socks in her drawer.
In complete darkness, and without looking, how many socks must she take from the drawer in order to be sure to get a pair that match?
The answer is 3.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
There are 12 black and 12 white socks. If cathy wants to pair a match, she has to 3 socks. Here is the combination: <B B B> <B B W> <B W B> <W W W> <W B W> <W W B>