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    Question

    40 know Hindi, 32 know English, 18 know both. One

    student chosen. Probability they know at least one?
    A 1 Correct Answer Incorrect Answer
    B 4 Correct Answer Incorrect Answer
    C 6 Correct Answer Incorrect Answer
    D 8 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Total = 40 + 32 –18 = 54 Probability = 54/54 = 1

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