If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Unit 9: Series

About this unit

This unit explores geometric series, which involve multiplying by a common ratio, as well as arithmetic series, which add a common difference each time. We'll get to know summation notation, a handy way of writing out sums in a condensed form. Lastly, we'll learn the binomial theorem, a powerful tool for expanding expressions with exponents.
Test your understanding of Series with these %(num)s questions.