# Three screws are drawn at random from a lot of 100 screws, 10 of which are defective. Find the probability of the event that all 3 screws drawn are nondefective, assuming that we draw (a) With replacement (b) Without replacement.

Chapter 24, PROBLEM SET 24.3 #3

Three screws are drawn at random from a lot of 100 screws, 10 of which are defective. Find the probability of the event that all 3 screws drawn are nondefective, assuming that we draw

(a) With replacement

(b) Without replacement.

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