Section: Math Section 2

5) What is the average of the first 50 positive integers?

1. 25
2. 25.5
3. 26
4. 26.5
5. 27

Whenever you need the average of a group of evenly spaced numbers, you just have to take the average of the smallest number and the largest number and divide by two. Here this would be ¹⁺⁵⁰/₂ = ⁵¹/₂ = 25.5.