Application 3: The ISB Number As a scheme of regulating and keeping on various publications in different parts of the earth. The International Standard Book Number (ISBN) was introduced. From a 10-digit code, it was expanded in 2007 to a 13-digit code. Each published book, including media variations- electronic, paperback, hardcover - is assigned a distinctive ISBN code. In the Philippines, the National Library of the Philippines (NLP) takes charge of the ISBN registration, allocation and designation for Filipino publishers and authors. An ISBN code takes the form x1x2X3 - X4X5X6 - X7X - X9X10X11X12 - x13. Currently, x,XzX3 = 978 or 979. (the fourth digit x, is allocated for the country code while the remaining digits (except the last) are used to identify the author and the title of the book. The last digit x13, is called the check digit, this can be obtained using the formula x13 = 10 - (x + 3x2 +X3 +3x, +xs +3x, + xy + 3xg + X, + 3X10 + X1 +3x12) mod 10. If x13 = 10, then the check digit is 0. Examples a) Determine the check digit for the book "Larry Can't Cook": 978-971-27-2769-? b) Determine if the ISBN code 978-971-27-2770-4 is valid or not. Solutions a) X13 = 10 - (9 + 3(7) +8 +3(9) +7+3(1) + 2 + 3(7) + 2 + 3(7) + 6 + 3(9)) mod 10 = 10 - (164 mod 10) = 10 - 4 = 6 b) X13 = 10 - [9+ 3(7) + 8+ 3(9) + 7+ 3(1) +2 + 3(7) +2 + 3(7) +7+3(0)] mod 10 = 10 - (128 mod 10) = 10 - 8 = 2 The ISBN code is not valid.

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Application 3: The ISB Number
As a scheme of regulating and keeping on various publications in different parts of the earth. The
International Standard Book Number (ISBN) was introduced. From a 10-digit code, it was expanded in
2007 to a 13-digit code. Each published book, including media variations – electronic, paperback, hardcover
- is assigned a distinctive ISBN code.
In the Philippines, the National Library of the Philippines (NLP) takes charge of the ISBN
registration, allocation and designation for Filipino publishers and authors.
An ISBN code takes the form x,x2x3 - X4X5X6 - X7X8 - X9X10X11X12 - x13. Currently,
x,x,x3 = 978 or 979. (the fourth digit x, is allocated for the country code while the remaining digits
(except the last) are used to identify the author and the title of the book. The last digit x13, is called the
check digit, this can be obtained using the formula x13 = 10 – (x1 + 3x2 + X3 + 3x4 + xs + 3x, + x7 +
3xg + x, + 3x10 + xX11 + 3x12) mod 10. If x13 = 10, then the check digit is 0.
Examples
a) Determine the check digit for the book "Larry Can't Cook": 978-971-27-2769-?
b) Determine if the ISBN code 978-971-27-2770-4 is valid or not.
Solutions
a) X13 = 10 – (9 + 3(7) + 8 + 3(9) +7+3(1) + 2+3(7) + 2+ 3(7) + 6 + 3(9)) mod 10
= 10 - (164 mod 10)
= 10 - 4 = 6
b) x13 = 10 – [9+ 3(7) + 8+ 3(9) + 7+ 3(1) +2 + 3(7) + 2 + 3(7) +7+3(0)] mod 10
= 10 - (128 mod 10)
%3D
= 10 – 8 = 2
The ISBN code is not valid.
Transcribed Image Text:Application 3: The ISB Number As a scheme of regulating and keeping on various publications in different parts of the earth. The International Standard Book Number (ISBN) was introduced. From a 10-digit code, it was expanded in 2007 to a 13-digit code. Each published book, including media variations – electronic, paperback, hardcover - is assigned a distinctive ISBN code. In the Philippines, the National Library of the Philippines (NLP) takes charge of the ISBN registration, allocation and designation for Filipino publishers and authors. An ISBN code takes the form x,x2x3 - X4X5X6 - X7X8 - X9X10X11X12 - x13. Currently, x,x,x3 = 978 or 979. (the fourth digit x, is allocated for the country code while the remaining digits (except the last) are used to identify the author and the title of the book. The last digit x13, is called the check digit, this can be obtained using the formula x13 = 10 – (x1 + 3x2 + X3 + 3x4 + xs + 3x, + x7 + 3xg + x, + 3x10 + xX11 + 3x12) mod 10. If x13 = 10, then the check digit is 0. Examples a) Determine the check digit for the book "Larry Can't Cook": 978-971-27-2769-? b) Determine if the ISBN code 978-971-27-2770-4 is valid or not. Solutions a) X13 = 10 – (9 + 3(7) + 8 + 3(9) +7+3(1) + 2+3(7) + 2+ 3(7) + 6 + 3(9)) mod 10 = 10 - (164 mod 10) = 10 - 4 = 6 b) x13 = 10 – [9+ 3(7) + 8+ 3(9) + 7+ 3(1) +2 + 3(7) + 2 + 3(7) +7+3(0)] mod 10 = 10 - (128 mod 10) %3D = 10 – 8 = 2 The ISBN code is not valid.
a) Determine the check digit for the book "Upside
Down (Book 1): A Vampire Tale": 978-1-60309-088-9?
Transcribed Image Text:a) Determine the check digit for the book "Upside Down (Book 1): A Vampire Tale": 978-1-60309-088-9?
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