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    Question

    Find the average of prime numbers between 20 and

    40.
    A 27 Correct Answer Incorrect Answer
    B 28 Correct Answer Incorrect Answer
    C 29 Correct Answer Incorrect Answer
    D 30 Correct Answer Incorrect Answer

    Solution

    Prime numbers between 20 and 40 = 23, 29, 31, 37 Required sum = 23 + 29 + 31 + 37 = 120 Number of prime numbers = 4 Required average = (120 Ă· 4) = 30 Hence, option d.

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