Four In A Row
  • Four numbers are displayed in a row. The average of the first two numbers is 8, the average of the middle two numbers is 11.8, and the average of the last two numbers is 7.7. Determine the average of the first and last number.

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