SOLUTION: What is the probability of getting nine numbers that are all nines?

Question 271399: What is the probability of getting nine numbers that are all nines?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is the probability of getting nine numbers that are all nines?
P(one number that is all 9's) is unknown because we don't know
how many digits there are in the number.
If one digit, prob = 1/9
If two digits, prob = 1/99
if three digits, prob = 1/999
etc.
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Prob of getting 9 of them is the (prob of getting one)^9
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Cheers,
Stan H.
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