Multiple choice

Three coins are tossed. What is the probability of getting at the most two tails?

  1. 7/8

  2. 1/8

  3. 1/2

  4. 1/7

  5. 3/5
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A Correct answer
Explanation

Total outcomes for 3 coins = 2^3 = 8. Outcomes with 3 tails = 1 (TTT). Outcomes with at most 2 tails = 8 - 1 = 7. Probability = 7/8.

AI explanation

When three coins are tossed, the total number of possible outcomes is 2^3 = 8. The probability of getting at most two tails is the complement of getting exactly three tails. Since there is only 1 outcome with exactly three tails (TTT), the complement probability is (8 - 1)/8 = 7/8.

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