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    5. hhow vocher card number are designed and how it became impossible for the user to guess the number?
    hhow vocher card number are designed and how it became impossible for the user to guess the number?

    michaelswaxy

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    0  Views: 807 Answers: 1 Posted: 13 years ago
    Tags: , technology,
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      1 Answer

      Check this out :http://stackoverflow.com/questions/2086983/algorithm-for-gift-card-codes

      13 years ago. Rating: 7
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