Civil Service Exam Reviewer · Averages · medium

What is the average of the first 39 positive even numbers?

  1. 40
  2. 39
  3. 1560
  4. 78

Answer

A. 40

Solution

The first 39 even numbers are 2, 4, …, 78; their average is (first + last)/2 = 40.

More Averages questions

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