Question

What is the average of all of the integers from 13 to 37?

Answer 1

the midpoint between 13 and 37 of course

Answer 2

add them then divide in half

Answer 3

\[\sum_{13}^{37}=\frac{n(13+37)}{2}\]
\[avg\sum_{13}^{37}=\frac{n(13+37)}{2}\div n=\frac{13+37}{2}\]