Published by:
CGP EDU Academic Team
Published on: August 14, 2026
In an examination of 10 multiple choice questions (1 or more can be correct out of 4 options). A student decides to mark the answers at random. Find the probability that he gets exactly two questions correct. (Assume he attempts all the questions)
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
10 C 2 . 
Sol. In a question of given type probability of giving correct answer = 
Exactly two correct answers ≡ 10 C 2 × 
× 
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