Each new book published is given an International Standard BookNumber (ISBN), which consists of 10 digits arranged in four groups, such as0-123-45678-9. The first group of digits is a code for the language of the book; 0stands for English, 2 for French, and so on. The second group is a code for thepublisher and the third group is the publisher's number for the book. The final digitis a check digit. This digit provides a check on the other digits to ensure that theyare copied correctly. This check digit is chosen so that for any ISBN a1a2a3 . . . agɑ1073-76.lai + 2a2 + 3az ++ 9ag + 10a10 =0 (mod 11)or, equivalently,а1 + 2а2 + Заз ++ 9ag = a10 (mod 11).The check digit can be any one of the digits 0, 1, 2, ...,9 or X, where X stands forthe number 10. 74. Is 1-56-004151-5 a valid ISBN?

Given the ISBN number of a book 1-56-004151-5 of the form a1a2a3a4a5a6a7a8a9a10 where…

Answered: Is 1-56-004151-5 a valid ISBN?

Math

Advanced Math

Is 1-56-004151-5 a valid ISBN?

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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Question

Each new book published is given an International Standard Book
Number (ISBN), which consists of 10 digits arranged in four groups, such as
0-123-45678-9. The first group of digits is a code for the language of the book; 0
stands for English, 2 for French, and so on. The second group is a code for the
publisher and the third group is the publisher's number for the book. The final digit
is a check digit. This digit provides a check on the other digits to ensure that they
are copied correctly. This check digit is chosen so that for any ISBN a1a2a3 . . . agɑ10
73-76.
lai + 2a2 + 3az +
+ 9ag + 10a10 =0 (mod 11)
or, equivalently,
а1 + 2а2 + Заз +
+ 9ag = a10 (mod 11).
The check digit can be any one of the digits 0, 1, 2, ...,9 or X, where X stands for
the number 10.

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