Math Quiz - various functions

In this app, you can try various math questions includes:
Factorization
Expansion
Diagram
Binary
Square roots
Trigonometric ratio
Set theory
Inequality
Quadratic equation
Quadratic function
Probability
Differential
Integral
Complex number
Exponents
Logarithm
Sequence
Geometric
Fractions
Vectors
*This app is developed by a person educated in Japan and for high-school education in Japan. If you are interested in the other type of questions for your study, feel free to contact me!