In gambling casinos across the USA, a roulette wheel has 38 slots or spaces. Eac
ID: 3042671 • Letter: I
Question
In gambling casinos across the USA, a roulette wheel has 38 slots or spaces. Each slot has a different number and a color. Eighteen of the slots are red, 18 are black, and 2 are green. Your lucky color is “red” so you bet on the “red” and win when the ball ends up in a red slot. You try a second time and bet “red”. You’re betting that the circling steel ball will ultimately land in the “red” slot two times in a row. Calculate the probability that the ball will land in the “red” slot twice in a row. Round to the nearest hundredths place if a fraction. The probability is:
a. .22Explanation / Answer
Total number of slots: 38
Red=18
Black= 18
Green=2
The probability of event occurring is red= 18/38
The probability of the second event also is red= 17/37
The probability of both events occur continuously= 18/38 * 17/37 = 0.217639 (0.22)