Make 24

This is a puzzle game where you try to calculate 24 with 4 given numbers and basic arithmetics (+ - × and /). You win when there is one number left with a value of 24. Each puzzle is guaranteed to have at lease one solution.

In the practice mode, you can view one valid solution of each puzzle. As for the challenge mode, you are suppose to figure out as many puzzles as possible. Your final score will be based on how fast you can solve each puzzle. You can view your final score at the main menu.