GMAT Challenge | OG 2018 Problem Solving #4 - Videos

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Hello there! Welcome to Gooy’s Mathage Shop!

Mathage = Math + Massage.

This video is the 4th episode of GMAT Challenge 2018. In this challenge, I attempt to solve all problems (problem solving & data sufficiency) from GMAT Official Guide 2018. I try to use the most efficient method. Hopefully some of these videos could help someone.

Enjoy!

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