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Every social security number consists of nine digits, 0 through 9. if repetition of digits is permitted, how many possible social security numbers are there?
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1 vote
Every social security number consists of nine digits, 0 through 9. if repetition of digits is permitted, how many possible social security numbers are there?

User FredTheWebGuy
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1 Answer

7 votes
9^9 I think, 9*9*9*9*9*9*9*9*9
User HFBrowning
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