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MathNet 2023-part-07 — 187 problems (EN–VI) Question 93

Math Olympiad Vault · MathNet 2023-part-07 — 187 problems (EN–VI)

Question 93

A jar contains $97$ marbles that are either red, green, or blue. Neil draws two marbles from the jar without replacement and notes that the probability that they would be the same color is $\frac{5}{12}$. After Neil puts his marbles back, Jerry draws two marbles from the jar with replacement. Compute the probability that the marbles that Jerry draws are the same color.