Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Leibniz vs Newton...!!!

Expert replies
by killer1387 » Fri Mar 09, 2012 3:04 am
Historian: Leibniz, the seventeenth-century philosopher, published his version of calculus before Newton did. But then Newton revealed his private notebooks, which showed he had been using these ideas for at least a decade before Leibniz’s publication. Newton also claimed that he had disclosed these ideas to Leibniz in a letter shortly before Leibniz’s publication. Yet close examination of the letter shows that Newton’s few cryptic remarks did not reveal anything important about calculus. Thus, Leibniz and Newton each independently discovered calculus.
Which one of the following is an assumption required by the historian’s argument?

A. Leibniz did not tell anyone about calculus prior to publishing his version of it.
B. No third person independently discovered calculus prior to Newton and Leibniz.
C. Newton believed that Leibniz was able to learn something important about calculus from his letter to him.
D. Neither Newton nor Leibniz knew that the other had developed a version of calculus prior to Leibniz’s publication.
E. Neither Newton nor Leibniz learned crucial details about calculus from some third source.

Guys give it a try. OA E to follow post some discussions.
Last edited by killer1387 on Fri Mar 09, 2012 5:56 am, edited 1 time in total.
Join the discussion
Source: — Critical Reasoning |

by avik.ch » Fri Mar 09, 2012 3:52 am
IMO : E

But B was a good trap !!
Join the discussion

by killer1387 » Fri Mar 09, 2012 3:59 am
avik.ch wrote:IMO : E

But B was a good trap !!
Could you please elaborate the logic behind your pick.

thnx
Join the discussion

by avik.ch » Fri Mar 09, 2012 5:05 am
Leibniz, the seventeenth-century philosopher, published his version of calculus before Newton did. But then Newton revealed his private notebooks, which showed he had been using these ideas for at least a decade before Leibniz’s publication. Newton also claimed that he had disclosed these ideas to Leibniz in a letter shortly before Leibniz’s publication. - facts
Yet close examination of the letter shows that Newton’s few cryptic remarks did not reveal anything important about calculus. - premise
Thus, Leibniz and Newton each independently discovered calculus. - conclusion

L and N both independently discovered calculus ----> as N's letter did not reveal anything to L about calculus.

Now here there is a change in scope -

discovering independently --- > letter not revealing anything.

Anything that will connect this two or will negate anything that will weaken this statement by bringing this scope change.

E does that : by negating the weaken scenario that stands for the scope change.

A - irrelevant
B - The stimulus talks about only N and L, so X,Y,,....are not in the scope of the argument.

I think all other answer choices are tangent to the correct one.


Hope this helps !!
Join the discussion

by GmatKiss » Fri Mar 09, 2012 5:33 am
D/E, E is better!
Join the discussion