SOLUTION: there are 20 computers and 3 are defective. Three are removed and tested. What is the probability that none are defective if 2 are not replaced after being tested?

Algebra ->  Probability-and-statistics -> SOLUTION: there are 20 computers and 3 are defective. Three are removed and tested. What is the probability that none are defective if 2 are not replaced after being tested?      Log On


   



Question 470928: there are 20 computers and 3 are defective. Three are removed and tested. What is the probability that none are defective if 2 are not replaced after being tested?
Answer by chips(2) About Me  (Show Source):