`` A girl was going to college and a boy asked her name . The girl said : '' `` 20 years 6 months '' '' . What could the girl 's name be ? ''
A man has 53 socks in his drawer . They are 21 identical blue , 15 identical black and 17 identical red . The light went off and he is in complete darkness . How many socks must he take out to be 100 % certain that he has a pair of black socks ?