What is the average of all the whole numbers from 1 to 100?

First, let's find the sum of 100 terms, where a1 is 1 and an = 100.

Sn = (n/2)(a1 + an)

S100 = (100/2)(1 + 100) = 50(101) = 5,050

The average of all whole numbers from 1 to 100 is: 5,050/100 = 50.5