Open Middle®
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to create a true equation.
Hint
List all the 2-digit squares and then make a systemic trial and error method to identify the right combination.
Start with the larger squares.
Start with the larger squares.
Answer
There is more than one potential answer e.g. sqrt(36) – sqrt(25) = 1
Source: Jos Bertemes
There are exactly 6 solutions. In three family pairs. (Where 12-11 = 1 is considered in the same family as 12-1=11). Does anyone have an idea of how to expand and generalize this problem?
I love it. I would like to try it.