An American roulette wheel contains 38 slots numbered 00, 0, 1, 2, 3, c, 35, 36. Eighteen of the slots numbered 1-36 are colored red and 18 are colored black. The 00 and 0 slots are considered to be uncolored. The wheel is spun, and a ball is rolled around the rim until it falls into a slot. What is the probability that the ball falls in each of the following?
1. A red slot
2. A black slot
3. The 00 slot