Number of Solutions for Each Integer from 1 to 20


Magoosh's Number Sense

Using each of the four digits at the top once, construct an expression that evaluates to an integer between 1 and 20 via any combination of the following operators:

Example: Given the digits 1 2 3 4, one possible expression that evaluates to 9 is: 4 * (2 + 1) - 3.

Click on any bar or integer on the Solutions chart to see a list of solutions for that integer.