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4 years ago

14

For security, a credit card number is coded in the following way, so that it can be sent as a message. Subtract each digit from

9. (8)
Code the credit card number 3201 2342 3458 0931
This is my question

1 answer:

RUDIKE [14]4 years ago

8 0

6798 7657 6541 9068 is the answer.

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