## Is i>j?

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### Is i>j?

by [email protected] Revolution » Wed May 11, 2016 7:14 pm
Is i>j?

1) k^2j>ki
2) j^2k>ji

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Last edited by [email protected] Revolution on Sat May 14, 2016 1:48 am, edited 1 time in total. Math Revolution

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[Course] Starting $79 for on-demand and$60 for tutoring per hour and $390 only for Live Online. Email to : [email protected] Elite Legendary Member Posts: 3991 Joined: 24 Jul 2015 Location: Las Vegas, USA Thanked: 19 times Followed by:36 members by [email protected] Revolution » Sat May 14, 2016 1:48 am There are 3 variables in the original condition (I, j, and k). In order to match the number of variables to the number of equations, we need 3 equations. So there is high chance that E is the correct answer. Using both the condition 1) and the condition 2), the answer is no when k=1, j=10 and i=1. And the answer yes when k=-1, j=-1 and i=10. Hence, the correct answer is E. - Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution. Math Revolution The World's Most "Complete" GMAT Math Course! Score an excellent Q49-51 just like 70% of our students. [Free] Full on-demand course (7 days) - 100 hours of video lessons, 490 lesson topics, and 2,000 questions. [Course] Starting$79 for on-demand and $60 for tutoring per hour and$390 only for Live Online.
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