You're math is all wrong. These do not follow PEMDAS rules and the "correct answers are incorrect. For example, the second question is 6:2(1+2), PEMDAS is parentheses, exponents, multiplication, division, addition, subtraction. That is the order of operations. So the answer to that questions would be as follows;
6:2(1+2)
6:2(3)
6:6
1
6 divided by 6 is 1. The answer is 1.
You had the correct answer set as 9. This means you followed something like this;
6:2(1+2)
3(1+2)
3(3)
9
This is incorrect. This does not follow order of operations and your whole game is invalid. Good try, but you need to rewrite your whole code. half star for effort.