A multiple choice exam consists of 12 questions, each having 5possible answers. To pass, you must answer at least 8 out of 12questions correctly. What is the chance of this, if ;
a. You go into the exam without knowing a thing, and have toresort to Pure guessing?
b. You have studied enough so that on each question, 3 choicescan be eliminated. But then you have to make a pure guess betweenthe remaining 2 choices.
c. You have studied enough so that you know for sure the correctanswer on 2 questions. For the remaining 10 questions you have toresort to pure guessing.
