Books Are Assigned Identification Numbers Called ISBNs $0 - 673 - 99893 - 2$

question 49

Multiple Choice

Books are assigned identification numbers called ISBNs. Each ISBN is a ten-digit number such as $0 - 673 - 99893 - 2$ . The final digit is called the check digit which is determined on the basis of modular arithmetic. The final (check) digit is obtained as follows: start at the left and multiply the first nine digits of the ISBN number by $10,9,8,7,6,5,4,3$ , and 2 respectively. Then add these products. The check digit is the smallest number that must be added to the result to get a multiple of 11 .
Find the check digit for the ISBN 0-681-81927-__.

• A) 1
• B) 7
• C) 8
• D) 4

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Definitions:

Order Instrument

A financial document that is payable to a specific person or entity named on the document, necessitating endorsement for transfer.

Specific Payee

indicates a person or entity named explicitly in a negotiable instrument as the recipient of the payment.

Document

A recorded piece of information, either in physical or electronic format, used for communication or to provide evidence.

Named

Designated or identified by a specific name.