Riddles

Lucas and my math teacher like to give us extra credit sheets over holidays. Over Thanksgiving she gave us a sheet of riddles. If we answered correctly we'd get some extra credit points. Here are some..

1. I have two coins totaling thirty cents, and one is not a nickel. How is this possible?
2. If a rooster sitting on the very top of a roof lays an egg, which way will it roll down, east or west?
3. It is possible for half of twelve to equal seven. Explain.
4. What is at the beginning of everything, at the end of time, and is always in between?
5. How much dirt, (in cubic feet) is in a hole 3 feet wide, 2 feet long, and 6 feet deep?
6. You throw away the outside, then cook the inside. You eat the outside of what's left, and then throw away the inside. What did you eat?
7. What occurs in every minute, twice in every moment, yet never in a thousand years?
8. How many 3 cent stamps are in a dozen?
9. An airplane carrying the U.S. Olympic Team crashes on the border of the United States and Canada. In which country would you bury the survivors?
10.A man rides into town on Friday. Three days later, he leaves, again on Friday. How is this possible?
11. Which is correct to say, "The yolk of the egg are white," or "The yolk of the egg is white?"
12. There are six ears of corn in a hollow stump. If a perfectly healthy squirrel carries only three ears out each day, how many days will it take to empty the stump?

So try to answer these riddles. Remember that if it's too easy, you're probably wrong.

Answers will be in the comment section below. Let me know how you did!