Open Middle®
Directions: Create a set of five positive integers from 1 to 20 so that the values of their mean, median, and range are the same and have the greatest possible value.
Hint
How do you find the mean/median/range of a set of five integers?
Answer
The greatest possible value found so far is 14 from the data set {6, 11, 14, 19, 20}.
Source: Eric Berchtold, Melissa Minnix, and Robert Kaplinsky
