   Chapter 8.2, Problem 28ES 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

Air Travel Many printed airline tickets contain a 10-digit document number followed by a check digit. The check digit is chosen to be the sum of the first 10 digits mod 7. Determine whether the given number is a valid document number.12604299844

To determine

Many printed airline tickets contain a 10-digit document number followed by a check digit. The check digit is chosen to be the sum of the first 10-digits mod 7. Determine whether the given number is a valid document number - 12604299844

Explanation

Given: Document number- 12604299844

Calculation:

Given the document number as follows

12604299844

Thus, the check digit is calculated as follows:

d11=(1+2+6+0+4+2+9+9+

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