Answer
In or order to find check digit, formula use for usps is x_{11}=x_{1}+x_{2}+x_{3}.....x_{10} mod 9
Work Step by Step
In or order to find check digit, formula use for usps is x_{11}=x_{1}+x_{2}+x_{3}.....x_{10} mod 9
Discrete Mathematics and Its Applications, Seventh Edition
by Rosen, Kenneth
Published by
McGraw-Hill Education
ISBN 10:
0073383090
ISBN 13:
978-0-07338-309-5
Chapter 4 - Section 4.5 - Applications of Congruences - Exercises - Page 293: 18
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