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# Can the accidental transposition of two consecutive digits ISBN: 9780073383095 37

## Solution for problem 31E Chapter 4.5

Discrete Mathematics and Its Applications | 7th Edition

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Problem 31E

Can the accidental transposition of two consecutive digits in an airline ticket identification number be detected using the check digit?

Periodicals are identified using an International Standard Serial Number (ISSN). An ISSN consists of two blocks of four digits. The last digit in the second block is a check digit. This check digit is determined by the congruence ≡ 3d1 + 4d2 + 5d3 + 6d4 + 7d5 + 8d­6 + 9d7 (mod 11). When d8 = 10 (mod 11), we use the letter X to represent d8 in the code.

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Chapter 5—Cost Volume­Profit Relationships Primary purpose – to estimate how profits are affected by the following five factors: 1. Selling prices 2. Sales volume 3. Unit variable costs 4. Total fixed costs 5. Mix of products sold. However, to simplify calculations, three assumptions are held: 1. Selling price is constant. The price of a product or service will not change...

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##### ISBN: 9780073383095

This textbook survival guide was created for the textbook: Discrete Mathematics and Its Applications, edition: 7. The answer to “Can the accidental transposition of two consecutive digits in an airline ticket identification number be detected using the check digit? Periodicals are identified using an International Standard Serial Number (ISSN). An ISSN consists of two blocks of four digits. The last digit in the second block is a check digit. This check digit is determined by the congruence ? 3d1 + 4d2 + 5d3 + 6d4 + 7d5 + 8d­6 + 9d7 (mod 11). When d8 = 10 (mod 11), we use the letter X to represent d8 in the code.” is broken down into a number of easy to follow steps, and 91 words. Discrete Mathematics and Its Applications was written by and is associated to the ISBN: 9780073383095. The full step-by-step solution to problem: 31E from chapter: 4.5 was answered by , our top Math solution expert on 06/21/17, 07:45AM. Since the solution to 31E from 4.5 chapter was answered, more than 253 students have viewed the full step-by-step answer. This full solution covers the following key subjects: digit, check, digits, issn, mod. This expansive textbook survival guide covers 101 chapters, and 4221 solutions.

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