This command line application consists of five games: Even, Calc, GCD, Progression and Prime.
The application generates a random number. Decide whether it is even or not.
The application generates an expression. Find out the value and type the result.
The application generates two random numbers. Find out the greatest common divisor of them.
The application generates a progression with one number hidden. Find out which.
The application generates a random number. Decide whether it is prime or not.
