4. A roulette wheel has 38 slots, numbered 0, 00, and 1 through 36. If you bet 1 on a specified number, you either win 35 if the roulette ball lands on that number or lose 1 if it does not. If you continually make such bets, approximate the probability that

(a) you are winning after 34 bets;

(b) you are winning after 1,000 bets;

(c) you are winning after 100,000 bets.
Assume that each roll of the roulette ball is equally likely to land on any of the 38 numbers.