Question #308264

Verify if the ISBN 978-0-760-73261-6 is valid?

1
Expert's answer
2022-03-09T14:56:29-0500

Solution


Given that ISBN 978-0-760-73261-6


The given ISBN is 13 digit ISBN number


We assign the position of each number from right to left


For

9 the position is 13

7 the position is 12

8 the position is 11

0 the position is 10

7 the position is 9

6 the position is 8

0 the position is 7

7 the position is 6

3 the position is 5

2 the position is 4

6 the position is 3

1 the position is 2

6 the position is 0


Now we the Odd number positions by 1 and Even number positions by 3.


9×(1)+7×(3)+8×(1)+0×(3)+7×(1)+6×(3)+0×(1)+7×(3)+3×(1)+2×(3)+6×(1)+1×(3)+6×(1)=1089 × (1) + 7 ×(3)+8 ×(1)+0 ×(3)+7 ×(1)+6 ×(3)+0 ×(1)+7 ×(3)+3 ×(1)+2 ×(3)+6 ×(1)+1 ×(3)+6 ×(1)\\ =108



Now we divide this sum by 1010 and see that the remainder is 808≠0


10810=10+810\frac{108}{10}=10+\frac{8}{10}


since the remainder is not zero, therefore, the given ISBN number is not a valid ISBN number.





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