If you don't know what Khan Academy is, watch this. When it comes to GMAT prep, using Khan Academy can be a very effective tool for refreshing basic skills, but there's a catch. KA content is aligned to the common core state standards for math. The GMAT is NOT aligned to the common core.

Read More# GMAT & MBA Admissions Blog

## John Easter

### Recent Posts

## GMAT Quant Strategies: Summing an Arithmetic Sequence

Posted by John Easter on Wed, May 15, 2013 @ 08:18 AM

One of the more difficult **GMAT problem types** deals with summing an arithmetic sequence. Problem 157 in the 12th edition Official Guide is an example:

Tags: gmat test, GMAT prep, GMAT, GMAT problem solving, GMAT integer questions, GMAT Blog