SOLUTION: A social security number consist of nine digits. How many different social security numbers are possible if repetition of digits is permitted?

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Question 765730: A social security number consist of nine digits. How many different social security numbers are possible if repetition of digits is permitted?
Answer by stanbon(75887) About Me  (Show Source):
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A social security number consist of nine digits. How many different social security numbers are possible if repetition of digits is permitted?
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10^9
Cheers,
Stan H.
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