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IMAS 2025–2026 — Junior Division — Round 2 Question 4

IMAS · IMAS 2025–2026 — Junior Division — Round 2

Question 4

In the carnival game Break-A-Plate, a player throws five softballs at plates from a distance. If the player successfully breaks plates on any two consecutive throws among the five throws, the player wins a prize.

Question illustration

Suppose that for each throw, Charlie has a $\frac23$ chance of breaking a plate, and that all throws are independent of each other. What is the probability that Charlie wins a prize?
  1. $\frac{128}{243}$
  2. $\frac{190}{243}$
  3. $\frac{192}{243}$
  4. $\frac{200}{243}$
  5. $\frac{225}{243}$