Determine the check digit that should be appended to the ISBN 0-7167-9811.
A) 2
B) 5
C) 6
D) 8

Name: Determine the check digit that should be appended to the ISBN 0-7167-9811. A) 2 B) 5 C) 6 D) 8
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The check digit for an ISBN-10 is calculated using a weighted sum of the first 9 digits. For 0-7167-9811, the sum is 0*10 + 7*9 + 1*8 + 6*7 + 7*6 + 9*5 + 8*4 + 1*3 + 1*2 = 176. The check digit is the number that makes the total sum a multiple of 11. Adding 5 makes it 181, which is divisible by 11.

Determine the Check Digit That Should Be Appended to the ISBN