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Is n > 6?

This topic has 2 expert replies and 0 member replies

Is n > 6?

Post Thu Sep 14, 2017 4:32 am
Is n > 6?

(1) n√>2.5n>2.5
(2) n>37--√

Anyone, please, could share the process of solving this problem.

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Post Thu Sep 14, 2017 6:58 am
So, here's the ACTUAL question...

Quote:
Is n > 6
1) √n > 2.5
2) n > √37
Target question: Is n > 6?

Statement 1: √n > 2.5
Square both sides to get: n > (2.5)²
Evaluate to get: n > 6.25
If n > 6.25, then we can be CERTAIN that n > 6
Since we can answer the target question with certainty, statement 1 is SUFFICIENT

Statement 2: n > √37
First recognize that √36 < √37
In other words, 6 < √37
Statement 2 tells us that √37 < n
So, we can COMBINE the inequalities to get 6 < √37 < n
From this, we can conclude that n > 6
Since we can answer the target question with certainty, statement 2 is SUFFICIENT

Answer: D

Cheers,
Brent

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Brent Hanneson – Founder of GMATPrepNow.com
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Top Reply
Post Thu Sep 14, 2017 6:50 am
ardz24 wrote:
Is n > 6?

(1) n√>2.5n>2.5
(2) n>37--√

Anyone, please, could share the process of solving this problem.
You might want to check your posts after you enter them Smile

Cheers,
Brent

_________________
Brent Hanneson – Founder of GMATPrepNow.com
Use our video course along with Beat The GMAT's free 60-Day Study Guide

Check out the online reviews of our course
Come see all of our free resources

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Thanked by: ardz24
GMAT Prep Now's comprehensive video course can be used in conjunction with Beat The GMAT’s FREE 60-Day Study Guide and reach your target score in 2 months!

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