SOLUTION: What is the chance of getting at least one defective item if 3 items are drawn randomly from a lot containing 6 items of which 2 are defective items?

Question 896490: What is the chance of getting at least one defective item if 3 items are drawn randomly from a lot containing 6 items of which 2 are defective items?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is the chance of getting at least one defective item if 3 items are drawn randomly from a lot containing 6 items of which 2 are defective items?
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n = 3 ; number of defective = 2 ; number of not defective = 4
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P(at least one defective) = 1 - P(3 not defective)
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= 1 - 4C36C3
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= 1 - 4/20
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= 1 - 1/5
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= 4/5
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Cheers,
Stan H.
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