Nowadays, people don't send letters to one another when they want to catch up. You may get holiday or birthday cards from your parents, grandparents or other family members and friends, but for the ...

The leftmost, non-zero digit in a number. It is the digit with the greatest value in the number. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

A numeric digit used to ensure that account numbers are entered accurately into the computer. Check digits are computed when the numbers are generated, and they become part of the number, often at the ...