Question

    The mean of 7 consecutive natural numbers is 68. What is

    the addition of the minimum and maximum numbers?
    A 136 Correct Answer Incorrect Answer
    B 172 Correct Answer Incorrect Answer
    C 124 Correct Answer Incorrect Answer
    D 185 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Assume numbers are: (a - 3), (a - 2), (a - 1), a, (a + 1), (a + 2), (a + 3)

    Average = (7a / 7) = 68

    ⇒ a = 68

    Sum of smallest and largest = (a - 3) + (a + 3) = 2a = 2 × 68 = 136

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