150 levels to test your skill. There are three difficulty levels: Basic, Advanced and Expert. A wide range of formulas and problem types. Super challenge with infinite levels. If you pass the expert level, you can try the infinite challenge where the battle is against knowledge and time.ALL important algebric formulas.Just input terms and get the result for all important formulas. No problem will remain unresolved.Examples for all formulas.All formulas come with many examples from a variety of problem types.