SOLUTION: a bag contains a total of 9 batteries, of which five are defective. selecting two at random, without replacement, determine the probability that none of the batteries you select ar

SOLUTION: a bag contains a total of 9 batteries, of which five are defective. selecting two at random, without replacement, determine the probability that none of the batteries you select ar

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Question 462372: a bag contains a total of 9 batteries, of which five are defective. selecting two at random, without replacement, determine the probability that none of the batteries you select are good.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
Combination=nCr=n!/((n-r)!*r!)
P=5C2/9C2
=10/36 the probability that none of the batteries you select are good.
.
Ed
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