   Chapter 8.2, Problem 64ES Mathematical Excursions (MindTap C...

4th Edition
Richard N. Aufmann + 3 others
ISBN: 9781305965584

Solutions

Chapter
Section Mathematical Excursions (MindTap C...

4th Edition
Richard N. Aufmann + 3 others
ISBN: 9781305965584
Textbook Problem

UPC Codes Explain why the transposition of adjacent digits a and b in a UPC will go undetected only when | a − b | = 5 .

To determine

Explain why the transposition of adjacent digits a and b in a UPC will go undetected only when |ab|=5

Explanation

Given: The transposition of adjacent digits a and b in a UPC will go undetected only when |ab|=5

Formula:

Formula for the UPC check digit is as follows

d12=10(3d1+d2+3d3+d4+3d5+d6+3d7+d8+3d9+d10+3d11)mod10

Calculation:

We know that the formula to get the check digit is as follows

d12=10(3d1+d2+3d3+d4+3d5+d6+3d7+d8+3d9

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