So, there is a 1/292201338 chance of winning a jackpot at the Powerball. That means if the prize is $20 million, the expected value of a ticket is $20,000,000 x 1/292201338 = $0.068. Not to forget, it includes the value to the individual and the state, which takes over half of the winning amount as taxes!
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Consolation prizes
The jackpot is not the only thing you get; there are a few more things you win, as follows.
Match | Prize |
Five whites | $1,000,000 |
Four whites + red | $50,000 |
Four whites | $100 |
Three whites + red | $100 |
Three whites | $7 |
Two whites + red | $7 |
One white + red | $4 |
Red | $4 |
Let’s look at the probabilities next.
Five whites and no red
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P(5W AND NR) = P(5W)xP(NR)
P(5W) = 1 / 69C5 = 1/11238513
P(NR) = (25/26)
P(5W AND NR) = (1/11238513) x (25/26)
E.V. (5W AND NR) = $1,000,000 x 25 / (11238513 x 26) = $0.085
Four whites and One red
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P(4W AND 1R) = P(4W)xP(1R)
P(4W) = How many ways of getting 4 winning numbers of 5 drawn out of all combinations of 5 from 69 = How many ways of getting 4 winning numbers of 5 drawn x How many ways of the remaining 1 is not / How many ways of getting 5 winning numbers of 5 drawn from 69 = (5C4 x 64C1) / 69C5 = 320 / 11238513
P(1R) = (1/26)
P(4W AND 1R) = (320/11238513) x (1/26)
E.V. (4W AND 1R) = $50,000 x (320/11238513) x (1/26) = $0.055
Four whites and no red
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P(4W AND NR) = P(4W)xP(NR)
P(4W AND NR) = (320/11238513) x (25/26)
E.V. (4W AND NR) = $100 x (320/11238513) x (25/26) = $0.0027
Three whites and One red
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P(3W AND 1R) = P(3W)xP(1R)
P(3W) = (5C3 x 64C2) / 69C5 = 20160/ 11238513
P(1R) = (1/26)
P(3W AND 1R) = (20160/11238513) x (1/26)
E.V. (3W AND 1R) = $100 x (20160/11238513) x (1/26) = $0.007
Three whites and no red
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P(3W AND NR) = P(3W)xP(NR)
P(3W AND NR) = (20160/11238513) x (25/26)
E.V. (3W AND NR) = $7 x (20160/11238513) x (25/26) = $0.012
Two whites and One red
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P(2W AND 1R) = P(2W)xP(1R)
P(2W) = (5C2 x 64C3) / 69C5 = 416640/ 11238513
P(1R) = (1/26)
P(2W AND 1R) = (416640/11238513) x (1/26)
E.V. (2W AND 1R) = $7 x (416640/11238513) x (1/26) = $0.01
One white and one red
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P(1W AND 1R) = P(1W)xP(1R)
P(1W) = (5C1 x 64C4) / 69C5 =3176880/ 11238513
P(1R) = (1/26)
P(1W AND 1R) = (3176880/11238513) x (1/26)
E.V. (1W AND 1R) = $4 x (3176880/11238513) x (1/26) = $0.04
Zero whites and One red
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P(0W AND 1R) = P(0W)xP(1R)
P(0W) = (64C5) / 69C5 = 7624512/ 11238513
P(1R) = (1/26)
P(0W AND 1R) = (7624512/11238513) x (1/26)
E.V. (0W AND 1R) = $4 x (7624512/11238513) x (1/26) = $0.1
The Math of Powerball: Think Big
The odds you’ll win the Powerball jackpot: CNBC