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

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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