Multiple choice

If a coin is thrown two times, what is the probability that at least one tail is obtained ?

  1. 3/4

  2. 1/4

  3. 2/3

  4. None of these
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A Correct answer
Explanation

Possible outcomes: HH, HT, TH, TT. At least one tail: HT, TH, TT. Probability = 3/4.

AI explanation

The total number of outcomes when tossing a coin twice is 4, given by the sample space HH, HT, TH, TT. The favorable outcomes for getting at least one tail are HT, TH, and TT, which gives 3 favorable outcomes. Using the classical definition of probability, the calculation is 3 divided by 4, resulting in 3/4.

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