# The student knows 80% of the answers to 30 questions of the curriculum. What is the probability that the student

July 27, 2021 | education

| **The student knows 80% of the answers to 30 questions of the curriculum. What is the probability that the student will answer the question presented to him?**

Event A – the student answered the question correctly.

We find the probability P (A) from the classical definition of probability.

P (A) = m / n, where m is the number of favorable outcomes, n is the number of all possible outcomes.

n = 30; m = 30 * 80/100 = 24.

P (A) = 24/30 = 0.8.

Answer: the probability that the student will answer the question asked is 0.8.

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