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    Daily ChallengeMediumProbability

    A coin is flipped 3 times. What is the probability of getting exactly 2 heads?

    Uma moeda é lançada 3 vezes. Qual é a probabilidade de obter exatamente 2 caras?

    Answer options

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    Solution

    (32)×(12)3=38\binom{3}{2} \times \left(\tfrac{1}{2}\right)^{3} = \tfrac{3}{8}