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andijo76 Group Title

Social Security Numbers A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted? There is a possibility of 10 numbers in each place. There are 9 places in a social security number (123-456-789)… 10^9=10x10x10x10x10x10x10x10x10=1 billion =1 billion combinations is this right????

  • 2 years ago
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  1. andijo76 Group Title
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    the second part is my solution

    • 2 years ago
  2. Akshay_Budhkar Group Title
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    Can u have zero as ur first digit?

    • 2 years ago
  3. Konsaliaris Group Title
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    Your thought as long as your answer too, are completely right.. :)

    • 2 years ago
  4. Akshay_Budhkar Group Title
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    if zero can be ur first digit as well, your answer and thought are correct

    • 2 years ago
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