Question

A multiple choice exam consists of 10 questions, each having 5 possible answers. To pass, you must answer at least 6 out of 10 questions correctly. What is the probability of You go into the exam without knowing a thing, and have to resort to pure guessing, you have studied enough so that on each question, 3 choices can be eliminated. But then you have to make a pure guess between the remaining 2 choices?

Answer 1

You have a 1:2 chance of guessing the right answer, if you have to guess between the two.