A fair die is rolled 3 times. What is the probability of at least one six?
Answer and explanation
Correct answer: D.
- Step 1: Use the complement: the probability of no six in a single roll is . Step 2. No six in 3 rolls has probability , so at least one six has . **Answer: . Why not the others:** is the probability of no six, is three sixes, and is a rough guess ().
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