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6 July, 02:51

Social security number contains nine digits 0 0 0 0 0 0 0 0 0 how many different Social Security numbers can be formed using in a in a numerals from 0-9

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  1. 6 July, 06:21
    0
    First spot: 9 choices (0-9)

    Second spot: 9 choices (0-9)

    Third spot: 9 choices (0-9)

    .

    .

    .

    Ninth spot: 9 choices (0-9)

    There are 9 choices for each digit, meaning we need to compute 9^9 to figure out how many possible social security numbers there are.

    9^9 = 387420489 possible social security numbers
  2. 6 July, 06:41
    0
    9 digits x 9 numbers = 81
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