Abox contains 20 lightbulbs, of which 5 are defective.
if 4 lightbulbs are picked from the box...
Mathematics, 18.10.2019 04:30 yilianblanco
Abox 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
Answers: 1
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