SOLUTION: In a group of 100 batteries, 30 are dead. what is the probability that the first dead battery will be the fourth battery you pick?

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Question 320193: In a group of 100 batteries, 30 are dead.
what is the probability that the first dead battery will be the fourth battery you pick?
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
probability that first 3 batteries are live ___ (70/100)(69/99)(68/98)