Mark:
JELLY BEANS
P(at least one yellow jelly bean) = 1 - P(no yellow jelly beans)
P(no yellow jelly beans) = 1/2 * 1/2 = 1/4
So the probability the he gets at least one yellow jelly bean is 1 - 1/4 = 3/4
Best jelly bean answer
Ever!
Interestingly, the chances are also 3 out of 4 that he will get at least one red one.
Stormy, "
now I'm chuckling"
Laugh and the whole world laughs WITH you!
This winter, there was increased interest in the Powerball lottery when the jackpot offered $315 million, which was won by a man in Hurricane, West Virginia.
Powerball was first introduced in 1987 and the odds of winning were 1 in 55 million. Five white balls were picked from balls numbered from 1 to 45 and one powerball was picked from another set of balls numbered from 1 to 45.
In November 1997, officials raised the odds of winning to one in 80 million, thus making likely jackpots of at least 100 million dollars twice a year. Five white balls were chosen from those numbered from 1 to 49, and the powerball was chosen from another set numbered from 1 to 42.
Currently, the odds of winning Powerball are 1 in 120,526,770. Five white balls are chosen from those numbered from 1 to 53, and the powerball is chosen from another set numbered from 1 to 42.
Suppose you want to lower the odds of winning Powerball to one in 250,000. What should the range of the white balls be and what should the range of the powerball be
(The maximum number of white balls that you may use is 55 and the maximum number for the Powerball is 55).
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