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 2015 14th Ed.

Official Guide for the GMAT 13th Ed.

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Official Guide for the GMAT 12th Ed.

Revised GRE PDF 2nd Ed.


Section 6.3 Data Sufficiency

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