This is package for the "Brain games" project.
The user is shown simple math questions, and the user must give the right answer.
Three right answers win the game.
"brain-even" game is for checking if the random generated number is even.
"brain-calc" game is for counting arithmetic expressions.
"brain-gcd" game is for finding the GCD (Greatest Common Divisor) of two random numbers.
"brain-progression" game is for finding a missing element in the random arithmetic progression.
"brain-prime" game is for checking if the random generated number is prime.