The overall percentage of failures in a certain examination is 40. What is the probability that out of a group of 6 candidates at least 4 passed the examination?

The overall percentage of passes in a certain examination is 80 . If six candidates appear in the examination what is the probability that at least five pass the examination .

Find the probability of guessing at least 6 out of 10 answers in True false type examination

What is Varun's overall percentage in the examination?

There are 70 students in a class out of which 60% are boys. If 20 girls passes an examination then find the probability that a randomly selected girl would have passed the examination.

In an examination, the probability of a candidate solving a questions is (1)/(2) Out of given 5 question in the examination, what is the probability that the candidate was able to solve at least 2 questions?

In an examination 74% of the candidates passed and 156 failed. The candidates who appeared in the examination were