2007 Alabama ARML TST Problems/Problem 4
From AoPSWiki
Problem
Find the smallest positive integer 
such that the product 
ends in the four digits 2007.
Solution
The problem states that 
. Since 
, 
.
Thus, the smallest positive integer solution is 
.
See also
| 2007 Alabama ARML TST (Problems) | ||
| Preceded by: Problem 3 | Followed by: Problem 5 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 | ||
