you have 6 white socks and 6 black socks in your drawer all mixed up and identical in all but colour you need a pair but cannot see as it is dark and the power has gone . how many socks do you need to pick up to ensure you get at least one matching one
This is a classic puzzle! If you pick out three socks, and they have only 2 colors, you'll get at least one match because they can't be 3 different colors.
