# Passports contain identification codes of the following form. passport number check digit birth date check digit date ​ of expiry check digit 012345678 4 USA 480517 7 F 020721 2 &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; final check 8 Each of the first three check digits is computed on the preceding identification numbers by using a weighting vector of the form ( 7 , 3 , 1 , 7 , 3 , 1 , … ) in conjunction with congruence modulo 10 . For example, in this passport identification code, the check digit 4 checks the passport number , the check digit 7 checks the birth date , and the check digit 2 checks the date of expiry . The final check digit is then computed by using the same type of weighting vector with all the digits (including check digits, excluding letters). Verify that this passport identification code is valid. 0987654326USA1512269F9901018 &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; 4 0444555331USA4609205M0409131 &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; 8 0123987457USA7803012M9711219 &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; 3 0246813570USA8301047F0312203 &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; &lt; 6

### Elements Of Modern Algebra

8th Edition
Gilbert + 2 others
Publisher: Cengage Learning,
ISBN: 9781285463230

### Elements Of Modern Algebra

8th Edition
Gilbert + 2 others
Publisher: Cengage Learning,
ISBN: 9781285463230

#### Solutions

Chapter
Section
Chapter 2.7, Problem 17E
Textbook Problem

## Expert Solution

### Want to see the full answer?

Check out a sample textbook solution.See solution

### Want to see this answer and more?

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

See solution