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Six men in a company of 20 employees are graduates. If 3 men are selected from 20 at random, what is the probability that they are all graduates? What
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Six men in a company of 20 employees are...
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Nov 13, 2021
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JackTerrance
Six men in a company of 20 employees are graduates. If 3 men are selected from 20 at random, what is the probability that they are all graduates? What is the probability that at least one is a graduate? Select the correct answer from above options
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answered
Nov 13, 2021
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JackTerrance
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`P(3)=(6C_3)/(20C_3)` `=(6*5*4)/(20*19*18)=1/57` P(atleast 1)=`-P(0)` `=1-(14C_3)/(20C_3)` `=1-91/285=194/285`.
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