The ISBN of a book is a unique 13-digit code', also known as ISBN-13, that encodes information about the publisher, registrant, place of publication, and so on. If the ISBN-13 of a book is Y1Y2Y3 •· * · Y13, then it must satisfy the following congruence: y1 + 3y2 + y3 + 3y4 + y5 + 3y6 + y7 + 3ys + yo + 3y10 + y11 + 3y12 + Y13 = 0 (mod 10). (a) Find a book at home and take a picture of it showing the 13-digit ISBN. Then show that its ISBN satisfies this congruence. (b) Suppose vou have another book whose ISBN is partially erased so that vou can't read the fifth digit
The ISBN of a book is a unique 13-digit code', also known as ISBN-13, that encodes information about the publisher, registrant, place of publication, and so on. If the ISBN-13 of a book is Y1Y2Y3 •· * · Y13, then it must satisfy the following congruence: y1 + 3y2 + y3 + 3y4 + y5 + 3y6 + y7 + 3ys + yo + 3y10 + y11 + 3y12 + Y13 = 0 (mod 10). (a) Find a book at home and take a picture of it showing the 13-digit ISBN. Then show that its ISBN satisfies this congruence. (b) Suppose vou have another book whose ISBN is partially erased so that vou can't read the fifth digit
Chapter3: Performing Calculations With Formulas And Functions
Section: Chapter Questions
Problem 4.14CP
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For c), is it possible? Using ISBN: 9780756649791 from a)
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