### Home > PC > Chapter 2 > Lesson 2.1.2 > Problem 2-30

2-30.

Brian has the following sums to find:

Find a shortcut so that he will not have to add the last sum by hand.

(How many terms are in the final sum?)

2-30.

Brian has the following sums to find:

Find a shortcut so that he will not have to add the last sum by hand.

(How many terms are in the final sum?)