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A fair die is rolled three times. What is the probability of getting at least one six?

Competition practiceProbability & Permutation
  • A91/216
  • B125/216
  • C1/2
  • D1/216

Step-by-Step Solution

P(no six on one roll) = 5/6, so P(no six in three rolls) = . Therefore P(at least one six) = 1 - 125/216 = 91/216. Choosing 125/216 means the complement was not subtracted.
Answer: A) 91/216

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