A box contains 30 items. Some items may be defective at random. The number of defective

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A box contains 30 items.  Some items may be defective at random.  The number of defective items is 0 with probability 2/5, 1 with probability 2/5, 2 with probability 1/5.  If the last 2 items drawn from the box are checked, what is the probability that they are both defective?

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A box contains 30 items. Some items may be defective at random. The number of defective
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