Question 1138615: Three boxes contain black and white balls. Box 1 has 4 white 2 black. Box 2 has 4 white 3 black. Box 3 has 3 white 0 black. What is the probability that the last ball drawn from box three is white? (Simplified Fraction)
Found 2 solutions by ikleyn, greenestamps:
Answer by ikleyn(52886)   (Show Source):
You can put this solution on YOUR website! .
After careful reading the problem, I do not understand, what the boxes n1 and n2 do in this problem.
I do not understand also, what is the experiment performed over all this staff to estimate the probability.
Let me explain you, that, when the probability problem is posed, the central part of the problem
is a concise and precise description of the experiment.
This post does not meet requirements for the Math Probability problem.
Any solution, which may come from tutors, will be pure speculation and a pure fantasy in this case.
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It is with the DEEP SORROW I notice that today's "students" / visitors are UNABLE to formulate problems in a clear,
correct, accurate and concise way.
Answer by greenestamps(13209)  (Show Source):
You can put this solution on YOUR website!
It is indeed true that the problem is poorly described.
For the problem to make sense, apparently balls are drawn from the three boxes in some unknown order.
But it is easy to answer the question that is asked.
Box three contains only white balls; so the probability that ANY ball drawn from box 3 -- including the last ball drawn from box 3 -- is 1.
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