Instructions

In the annual cultural festival of a university, a quiz competition was conducted, wherein all participants were given three rounds with two questions in each round. In the first round, the participants get 40 points for each correct answer and a penalty of 20 points for each incorrect answer. If the participant answers both questions correctly, a bonus of 20 points is given. In the second round, the participant gets the same points as in the first round. Additionally, if both questions are incorrect, an additional penalty of 20 points is imposed. In the last round, the participant gets 80 points for each correct answer and a penalty of 40 points for each incorrect answer.

Question 74

If only two an answers are correct in the whole quiz, what is the probability that score would be 40?

Solution

From the given information, we get the following table,

image

Only two answers are correct in the whole quiz. We can select only two correct answers in the following ways.

image image

In any configuration total score is not equal to 40.

Therefore the probability is '0'.

Option (D) is correct.

Video Solution

video

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