SOLUTION: a box has 15 batteries 8 of which are totally dead. You start picking batteries out 1 at a time, find the probability that 1 of the first 5 work
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Question 594633: a box has 15 batteries 8 of which are totally dead. You start picking batteries out 1 at a time, find the probability that 1 of the first 5 work Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! Combination=nCr=n!/((n-r)!*r!)
(7C1*8C4)/15C5
=(7*70)/3003
= 70/429 the probability that 1 of the first 5 work.
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Ed
