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:
GMAT & MBA Admissions Blog
GMAT Quant Strategies: Summing an Arithmetic Sequence
Posted by John Easter on May 15, 2013 8:18:00 AM CDT
Tags: gmat test, GMAT prep, GMAT, GMAT problem solving, GMAT integer questions, GMAT Blog
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