Free online video lessons from khanacademy
covering the practice questions in the problem-solving math section of The Official Guide
for GMAT Review.

It would be best that you go through the GMAT practice test questions in the Study Guide first and then look at the videos for the questions that you might need help in.

**Questions 201-204, pgs. 179-180**

**Questions 205-206, pg. 180 **

**Questions 207-209, pgs. 180-181 **

**Errata:** Question #207

The answer should be **C: 4**

Given* n = *4*p
*The possible even divisors of

**Questions 210-213, pg. 181**

**Questions 214-216, pg. 181 **

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