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Permalink Reply by Virendra Kumar Shukla on November 20, 2011 at 21:15

Check digit is the last digit of an ISBN so  the answer is 5

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Permalink Reply by Saurabh Nagariya (Gupta) on November 20, 2011 at 21:40

th

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Permalink Reply by Dr. Badan Barman on November 20, 2011 at 21:16

I think the question is wrong. The question have ten digit (025463-104-5), it is not a valid question neither in the 10 digit format of ISBN nor in the thirteen digit format of ISBN. Your question should contain nine digit (if it is for 10 digit ISBN) or twelve digit (if it is for 13 digit ISBN).
I think the question should be
If the ISBN of a book is 025463-104, the check digit of the book is --
(A) 27 (B) 463 (C) 108 (D) 5
The answer in such cases will be (D) 5

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Permalink Reply by Saurabh Nagariya (Gupta) on November 20, 2011 at 21:40

thnax sir

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Permalink Reply by Saurabh Nagariya (Gupta) on November 20, 2011 at 21:41

thanx sir

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Permalink Reply by Rupesh Kumar A on November 21, 2011 at 0:59

I think the question is not wrong.  But it is testing the knowledge of student as to whether he/she knows the placement of check digit in an ISBN.

obviously (D) 5 because the last digit of ISBN is the check digit.

 

You can calculate the 10th digit (that is, check digit) in an ISBN-10 by multiplying the given 9 digits like this:

 

0 2 5 4 6 3 1 0 4 5 multiplied respectively by 1 2 3 4 5 6 7 8 9.  Add the products.  You get 126.  Do MOD 11 operation on it.  That is, divide until you get a remainder.  126 MOD 11 = 5.  So, 5 is the check digit.

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Permalink Reply by Dev prajapati on November 21, 2011 at 16:54

Ya , I am agree with all discussed above.

 

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Permalink Reply by NIRANJAN MOHAPATRA on November 23, 2011 at 19:57

Dear Saurabh,

I think you can understand about ISBN after see this figure ............

 

 

Also It discuss before:

please visit

http://lislinks.com/forum/topics/international-standard-book-number...

 

 

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