Home > Just Math
| Divisibility rule (Posted on 2013-02-13) |
 |
abcde is five digit number. Show that abcde is divisible by 7 if and only if the number abcd-(2*e)
is divisible by 7 (* means Multiplication)
Comments: (
You must be logged in to post comments.)
|
|
Please log in:
Forums (0)
Newest Problems
Random Problem
FAQ |
About This Site
Site Statistics
New Comments (2)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On
Chatterbox:
|
