# Math (expected value)

posted by .

A roulette wheel in Las Vegas has 18 red slots and 18 black slots numbered alternately with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players are not allowed to bet on green. The house wins all bets if 0 or 00 comes up. A \$1 bet on a single roll of a roulette wheel wins \$36 if the marble lands in the slot for the number selected. If that number doesnâ€™t come the person placing the bet loses the \$1. What is the expected value of such a bet?

• Math (expected value) -

expected value= reward*probability
= 36* 1/38 (ie, he has one chance in 38 to win, with a reward of 36)

## Similar Questions

1. ### statistics help needed

In the game of roulette, a steel ball is rolled onto a wheel that contains 18 red, 18 black, and 2 green slots. If the ball is rolled 24 times, find the probability of the following events. A. The ball falls into the green slots 4 …
2. ### math

On a roulette wheel are 36 slots numbered 1 through 36 and 2 slots numbered 0 and 00. You can bet on a single number. If the ball lands on your number, you receive 35 chips plus the chip you played. a. What is the probability that …
3. ### math

A roulette wheel has 18 red slots and 18 black slots numbered alternately with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players …
4. ### math

A roulette wheel has 18 red slots and 18 black slots numbered alternaetly with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players …
5. ### Statistics - M/C

In a version of the game of roulette, a steel ball is rolled onto a wheel that contains 19 red, 19 black and 2 green slots. If the ball is rolled 25 times, the probability that it falls into the green slots two or more times: a) is …
6. ### Statistics/Probability

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots?
7. ### Statistics/Probability

in roulette, there are 18 red 18 black and 2 green slots ball rolled 25 times what is the prob that the ball does not fall into any green slots?
8. ### math

In the game of roulette a ball rolls into one of 37 slots. All the slots are evenly likely. Eighteen of the slots are red, eighteen are white and 1 is green. the ball is rolled 10 times. Calculate the probability of exactly 6 reds?
9. ### Statistics

A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. Two slots are green, 18 of the others are red, and 18 are black. a) What is the probability of winning with a bet on red in a single play of roulette?
10. ### Statsitcs

A roulette wheel has 38 slots, numbered 0,00,and 1 to 36. the slots 0 and 00 are colored green, 18 of the others are red and 18 are black. The dealer spins the wheel and at the same time rolls a small ball along the wheel in the opposite …

More Similar Questions