<PRE><B>Question 895893</B>
A bin holds 20 components, 4 in which are defective. An engineer selects 5 components to test; the components are selected without replacement. Find the probability that at least one of the components is defective?
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P(at least one defective) = 1 - P(all are good) = 1 - [16C4/20C4] 
= 1 - 0.3756
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Ans:: 6244

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Cheers,
Stan H.</PRE>