Five Digit Sum
  • The number 12148 has a unique feature: The sum of the first four digits equals the units digit. How many EVEN five-digit numbers have this unique property?

Answer:    
  Please enter a numerical answer
(ex. 1000 or 2.033) and click GO.		    

Contest problems and answers provided by:

David Rock
rock_david@colstate.edu
Columbus State University

Doug Brumbaugh
brumbad@pegasus.cc.ucf.edu
University of Central Florida