Difference between revisions of "2010 UNCO Math Contest II Problems/Problem 7"
(Created page with "== Problem == <math>P</math> and <math>Q</math> are each <math>2</math>-digit <math>\underline{prime}</math> numbers (like <math>73</math> and <math>19</math>), and all four dig...") |
m (moved 2010 UNC Math Contest II Problems/Problem 7 to 2010 UNCO Math Contest II Problems/Problem 7: disambiguation of University of Northern Colorado with University of North Carolina) |
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Revision as of 20:18, 19 October 2014
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 ?