Question

Find the probability of the scenario below. A jar contains seven balls, numbered from one to seven. You randomly pick a ball. It is numbered one or four.

Answer 1

A) 2/7 = 0.286

Explanation:

The probability of picking a ball numbered one or four is the sum of the probabilities of picking ball number one and ball number four. Each ball has an equal chance of being picked, so the probability of picking ball number one is 1/7 and the probability of picking ball number four is also 1/7. Therefore, the probability of picking a ball numbered one or four is:

P(one or four) = P(one) + P(four) = 1/7 + 1/7 = 2/7

So the answer is option A) 2/7 = 0.286.