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Mathematics, 22.02.2020 03:52 cbelew0001ouje4i

Box contains 20 lightbulbs, of which 5 are defective. If 4 lightbulbs are picked from the box randomly, the probability that at most 2 of them are defective is .

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Box contains 20 lightbulbs, of which 5 are defective. If 4 lightbulbs are picked from the box random...

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