Donald S. | Retired certified teacher, science, math, tech, engineering...Retired certified teacher, science, math...
5.05.0(2 lesson ratings)(2)
We can not see your original problem, however I created variations of problems and can conclude in a possible answer.
Using the above stated steps we would count all of the numbers individually, even if; it was a zero, a negative number, and even duplicated numbers, to get a total of "n". So, if you started with 11 numbers, regardless of what they were, you would count 11 = n. Verify that the example problem was done this way, and maybe you will come to the conclusion that you discovered an error in the example's solution.