1077631874-3

Here is some 11 digit numbers. The first 10 digit are actual Number and the 11th digit is a check digit. Now I wish to know how to find out the last digit i.e the check digit. 1077631548-1 1077631688-1 1077631790-9 1077631810-8 1077631874-3 I shall be glad to know the formula/procedure to...