Question

    8 students appear in an examination. In how many ways can the result be announced?

    A 128 Correct Answer Incorrect Answer
    B 256 Correct Answer Incorrect Answer
    C 196 Correct Answer Incorrect Answer
    D 32 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Each students can either pass or fail So there exists two possibilities for each students. So total number of ways = 2⁸ = 256

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