### Home > A2C > Chapter 12 > Lesson 12.1.2 > Problem 12-34

12-34.

Examine each of the series below. Homework Help ✎ Odd numbers: 1 + 3 + 5 + … + 149

Even numbers: 2 + 4 + 6 + … + 150Write an expression for the

*n*^{th}term of each series.What is the sum of each series?

Odd: *t*(*n*) = 2*n* − 1

Even: *t*(*n*) = 2*n*

Use the rectangle method or Antonio's method. Both series have 75 terms.