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Source: Official Guide for GMAT Review 2016 Data Sufficiency ; #66

1

If x and y are positive, is x

If x and y are positive, is x < 10 < y?

2 Explanations

1

Alan Man

Hi there - can you please explain why statement 2 is not a tautology? It simply repeats what the question already tells us (and therefore is not sufficient). That's what i first thought!

Mar 11, 2017 • Comment

Cydney Seigerman, Magoosh Tutor

Hi Alan! Excellent question :) The prompt itself only tells us that x < 0 and y < 0. The question we need to answer is if the information in statements 1 and 2 is sufficient to determine whether x < 10 < y. Again, we're not told that x < 10 < y originally but rather asked if we can determine if this is true :) I hope this clears up your doubts! If not, please let us know! Happy studying :D

Mar 12, 2017 • Reply

1

Gravatar Mike McGarry, Magoosh Tutor

Aug 18, 2015 • Comment

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Official Guide for GMAT Review 2016

Official Guide for the GMAT 13th Ed.

Official Guide for the GMAT 2015 14th Ed.

Nova's GRE Prep

Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 6.3 Data Sufficiency

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