2010 UNCO Math Contest II Problems/Problem 7
Problem
and are each -digit numbers (like and ), and all four digits are different. The sum is a -digit number made up of two more different digits ( is not necessarily prime). Further, the difference consists of yet two more different digits (again, is not necessarily prime). The number is a two digit number which uses the remaining two digits. What is ?
Solution
See also
2010 UNCO Math Contest II (Problems • Answer Key • Resources) | ||
Preceded by Problem 6 |
Followed by Problem 8 | |
1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 | ||
All UNCO Math Contest Problems and Solutions |