Mathematics, 06.05.2020 20:24, saigelthegreat8337

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A 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 .

A 31/969
B 70/323
C 91/323
D 938/969

This is from plato.

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A box contains 20 lightbulbs, of whic...