Good Riddles

Question: When is 99 more than 100?

Question: Ripped from my ancestors home, beaten and burned, I become a bloodthirsty killer.

What am I?

Question: It's got twists and turns, but has no curves.
Twist it to fix it, turn it to ruin it.

What is it?

Question: You are surrounded by a 100 foot wide and 100 foot deep moat. You have a 40 foot tall ladder, matches, a gallon of water, and as much rope as you need.

How can you get across the moat?

Question: Mr. Smith has two children. If the older child is a boy, what are the odds that the other child is also a boy?