Application of probability in Multiple choice questions:
For students Probability of answering (rightly) one question is 1/4 , answering wrongly is 3/4.
If you take around 10 questions in a question paper , the max probability goes to the teacher. Only if the students are lucky or know answers correctly they will be the winner.
In general question paper setter gets max probability.
There is one way of making students to get the max probability – if we ask the question like choose the wrong answers then there will 3/4 chances of wrong answers in that way students get answers mostly right.