Determine the check digit for 13-digit ISBN 978-0-385-53341- .
A) 0
B) 4
C) 6
D) 7

Question

Quizplus · Accepted Answer

To find the check digit, we need to use the following formula:

(10 - (3*9 + 7*7 + 8*8 + 0*6 + 3*5 + 5*3 + 3*3 + 4*1)) % 10

Simplifying the equation, we get:

(10 - (81)) % 10

(10 - 1) % 10

9 % 10

The remainder is 9, which is subtracted from 10 to get the check digit of 1. Therefore, the correct answer is C) 6 (the ninth digit from the left). However, none of the answer choices matches this, so the closest answer is C) 6, which is the remainder after finding the check digit using the formula.

Determine the Check Digit for 13-Digit ISBN 978-0-385-53341-