1. By moving one of the following digits, make the sum correct. 62 - 63 = 1
2. You have a fox, a chicken and a sack of grain. You must cross a river with only one of them at a time. If you leave the fox with the chicken he will eat it; if you leave the chicken with the grain he will eat it. How can you get all three across safely?
3. You have 12 black socks and 12 white socks mixed up in a drawer. It's early in the morning and you don't have any light to see the colors. How many socks must you pull out (blindly) to be sure of getting a matching pair?
4. What is special about the following sequence of numbers?8 5 4 9 1 7 6 10 3 2 0
I will be giving the answer in another two weeks if non of you are able to get the one.
