Books are identified by an International Standard Book Number (ISBN), a 10-digit code x1x2... x10, assigned by the publisher. These 10 digits consist of blocks identifying the language, the publisher, the number assigned to the book by its publishing company, and finally, a 1-digit check digit that is either a digit or the letter X (used to represent 10). This check digit is selected so that iæi = 0 mod 11 10 and is used to detect errors in individual digits and transposition of digits. (a) The ISBN for a book is 8 – 53 – 868295 – Q where Q is the check digit. What is Q? (b) The ISBN of another book is 3 – 261 - 56M29 7. Find the digit M.
Books are identified by an International Standard Book Number (ISBN), a 10-digit code x1x2... x10, assigned by the publisher. These 10 digits consist of blocks identifying the language, the publisher, the number assigned to the book by its publishing company, and finally, a 1-digit check digit that is either a digit or the letter X (used to represent 10). This check digit is selected so that iæi = 0 mod 11 10 and is used to detect errors in individual digits and transposition of digits. (a) The ISBN for a book is 8 – 53 – 868295 – Q where Q is the check digit. What is Q? (b) The ISBN of another book is 3 – 261 - 56M29 7. Find the digit M.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Books are identified by an International Standard Book Number (ISBN), a 10-digit
code x1x2... x10, assigned by the publisher. These 10 digits consist of blocks
identifying the language, the publisher, the number assigned to the book by its
publishing company, and finally, a 1-digit check digit that is either a digit or the letter
X (used to represent 10). This check digit is selected so that ", ixi = 0 mod 11
10
i=1
and is used to detect errors in individual digits and transposition of digits.
(a) The ISBN for a book is 8 – 53 – 868295
- Q where Q is the check digit. What is
Q?
(b) The ISBN of another book is 3 – 261 – 56M29 – 7. Find the digit M.
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