A examination consists of 8 questions in each of which one of the 5 alternatives is the…
Mathematics · JEE Advanced · NTA Exams — Statistics and Probability
A examination consists of 8 questions in each of which one of the 5 alternatives is the correct one. On the assumption that a candidate who has done no preparatory work chooses for each question any one of the five alternatives with equal probability, the probability that he gets more than one correct answer is equal to :
- (0.8)8
- 3 (0.8)8
- 1 − (0.8)8
- 1 − 3 (0.8)8
Answer
(D) 1 − 3 (0.8) 8
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