Source: Official Guide for GMAT Review 2016 Problem Solving; #87

2

The sum of all the integers k such

The sum of all the integers k such that ? -26 < k < 24 is

1 Explanation

1

Rob

Average * Number of terms = Sum
Average = (-25+23)/2 = -1
Number of Terms = 24-(-26)-1 = 49

Average * Number of terms = Sum
-1 * 49 = -49

Mar 16, 2016 • Comment

Cydney Seigerman, Magoosh Tutor

Nice work! Thanks for sharing your solution! :)

Mar 16, 2016 • Reply

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Official Guide for GMAT Review 2016

Official Guide for the GMAT 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

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Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 5.3 Problem Solving

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