Live GMAT classes with Target Test Prep start Nov 1 and Nov 21. 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 1
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 1 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
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
EALiveTeachOnDemand5 seats leftStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

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
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

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

OG 11 SC Practise qn 85, QN 41

Expert replies
by discreet » Wed May 23, 2007 10:07 pm
Dear All,

OG 11 SC Practise qn 85, OG 11 qn 41
I am a bit confused regarding the Singular and Plural form of Cost\Costs.
Initially,when I attempted the forementioned questions,I directly opted for the sentence having "Cost" as Plural.After going thru the expln in OG,I was a bit confused about the exception this solution had created.
In qn 85 , The Dirt Roads take the plural form "Cost" in the sentence which I felt was correcy?However,Can somebody elaborate more why "Costs" is correct (instead of costs) in the qn 41 below?OG 11 says that costs is Plural here !!!!!

Thnx,Regards,
You do not have the required permissions to view the files attached to this post.
Last edited by discreet on Thu May 24, 2007 1:03 am, edited 1 time in total.
Join the discussion
Source: — Sentence Correction |

by Cybermusings » Thu May 24, 2007 12:38 am
No dear it's the other way round....costs is singular while cost is plural...lets take a couple of examples

The dogs run out of the house
The dog runs out of the house

The cooks bake delicious cakes
The cook bakes delicious cakes

The soldiers drink milk every morning
The soldier drinks milk every morning

Just relate it to common usage examples and that will make things clearer...Hope this helps!!
Join the discussion

I know this but OG 11 ,SC qn 41 confused me !
Have a look at this one - Can you explain ??
You do not have the required permissions to view the files attached to this post.
Join the discussion

by discreet » Thu May 24, 2007 12:53 am
I think I should take the above example as an exception where the singular form "Costs" is used to satisfy the statement "are prohibitive" ??
OG explanations are a bit confusing as they tend to generalize it.whts yr view?
Join the discussion