What does this mean? I do not understand it:
"Multiply each digit in the identification number by its weight"
If you read the challenge description carefully, you will find out what the weights are.
Gah! I see now. I understood it right from the beginning, but I didn't incorperate this instruction: Subtract the remainder from 11 to give the check digit.
Posted by 
on 2016-10-18 08:59:58