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MathNet 2022-part-04 — 197 problems (EN–VI) Question 65

Math Olympiad Vault · MathNet 2022-part-04 — 197 problems (EN–VI)

Question 65

You roll a fair 12-sided die repeatedly. The probability that all the primes show up at least once before seeing any of the other numbers can be expressed as a fraction $p / q$ in lowest terms. What is $p+q$?