qqp question1: "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?" question2: 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?