What is the sum of the first 23 terms of an arithmetic sequence if the 10000th term is 9987 and the difference is 1?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.