Question
A boy attended 5 lab evaluations, each having a total of
100 marks. His scores were 88, 76, 92, 81, and 70. He randomly reveals one of the scores to his friend. What is the probability that he reveals a score where he got more than 80% marks?Solution
ATQ,
80% of 100 = 0.8 × 100 = 80
The number of lab evaluations with more than 80 marks = 3
So, the required probability = (3/5) = 0.6
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