In the game of standard American Roulette, a bet placed on " Black" always has a p=18/38, probability of winning.
a. If you place a bet on "Black" in 10 consecutive games of Roulette, what is the probability that you win atleast twice?
b. If you have nothing better to do, and play 300 consecutive games of Roulette(and always bet "Black"), what is the approximate probability that you win atleast 130 times.