Questions with and without questions

If I were a chairman, I would offer new and different ideas. If I had studied hard, I would have passed the math exam. These are the examples of 2nd and 3rd conditional sentence respectively. The former, second conditional is used to talk about untrue things in the present or future wherein the 3rd conditional refers to an impossible condition in the past and its probable result in the past. Solve the conditional exercises to understand the rules of this grammar topic.