A lot contains 12 items,4 of which are defective.If three items are drawn at random from the lot,what is the probability that none of them are defective?
A)6667
B)6363
C)6000
D)3003
E)2545

Question

Quizplus · Accepted Answer

The probability that none of the items are defective is calculated by choosing 3 non-defective items out of 8 non-defective ones, divided by the total ways to choose 3 items out of 12. This is (8C3)/(12C3) = 56/220 = 0.2545.

A Lot Contains 12 Items,4 of Which Are Defective