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GMATLiveTeach Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

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Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
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40 hours of live online classes + 6 months of TTP OnDemand
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Target Test Prep EA OnDemand

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Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

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165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
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Target Test Prep GMAT OnDemand

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Expert replies
by dextar » Sun Jun 01, 2008 8:44 pm
HI I'm unable to get this CR
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Source: — Critical Reasoning |

by jasonc » Sun Jun 01, 2008 11:04 pm
the argument is that because we know what temp/pressure it takes to create a fullereness in the lab, and that fullereness is found naturally, we can conclude that similar temp/pressure must have happened at some point on earth to form fullereness.

option D is the only one that weakens this because, if the fullereness found naturally is a of a different structural makeup, it means that we no longer know the temperature/pressure it takes to form natural fullereness, and thus can't use it as a test case for geologists.
I beat the GMAT! 760 (Q49/V44)
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