Question
The mean of 7 consecutive natural numbers is 68. What is
the addition of the minimum and maximum numbers?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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