today i learned that Wolfram Alpha is exactly like a freshman in Introduction to Probability and Statistics in that it thinks that, if you have five 24% chances to get something, your chance of getting it is 120%
i'm thinking it's 0.24 times the probability of 4 failures, which is 0.3336, so 0.08
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Probability of it not failing five times, so 1- (1- 0.24)^5
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i think he meant the probability of exactly one, not the probability of at least one
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The question isn't clear but the moral is you can look all this stuff up on math exchange. The odds of total failure is 1 in 4, so the odds at least one succeeding is 3 in 4.
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There's a formula for calculating the odds of -exactly- one success, which is 0.24 times the number of ways you can get exactly one success.
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