Program
to play the 'TwentyFour Game'.
The aim of the game is to make the number 24 by using four numbers from 1 through 9. If
the numbers, for instance,
are 4, 5, 7, 9, it
could be done it like this: 

You may type four numbers of your own. If you want a set of numbers that guarantees one or more solutions, then click "New set".  
Click on "Solutions" to get as many solutions as possible. If you typed your own numbers, it is not sure that solutions will be found. If more than 15 solutions are possible, the program will only show the first fifteen solutions it finds. 