### Home > PC > Chapter 2 > Lesson 2.3.1 > Problem 2-72

2-72.

Express the given series using sigma notation, then evaluate the sums with your program or by hand.

All of the numbers in the series are multiples of

.

The numbers in this series are all powers of

.

It is easier to start with an index ofinstead of.

All of the numbers in the series are multiples of

.