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

a tricky one

Expert replies
by sana.noor » Mon Aug 19, 2013 7:55 pm
A rectangular table seats 4 people on each of two sides, with every person directly facing another person across the table. If eight people choose their seats at random, what is the probability that any two of them directly face each other?

A) 1/56

B) 1/8

C) 1/7

D) 15/56

E) 4/7

OA is C

suppose their are 8 people A,B,C,D,E,F,G,H....so question is asking that what is the probability that A and B directly facing each other. if A selected a seat then B can select 1 seat from 7 options. so the right answer is [spoiler]1/7[/spoiler] however, i google this question and found that most of the explanation says its 4/7
Work hard in Silence, Let Success make the noise.

If you found my Post really helpful, then don't forget to click the Thank/follow me button. :)
Join the discussion
Source: — Problem Solving |

by ganeshrkamath » Mon Aug 19, 2013 8:23 pm
sana.noor wrote:A rectangular table seats 4 people on each of two sides, with every person directly facing another person across the table. If eight people choose their seats at random, what is the probability that any two of them directly face each other?

A) 1/56

B) 1/8

C) 1/7

D) 15/56

E) 4/7

OA is C

suppose their are 8 people A,B,C,D,E,F,G,H....so question is asking that what is the probability that A and B directly facing each other. if A selected a seat then B can select 1 seat from 7 options. so the right answer is [spoiler]1/7[/spoiler] however, i google this question and found that most of the explanation says its 4/7
Suppose we need to find the probability of 2 people A and B facing each other.
Now A can be in any of the 8 seats and B should be in the opposite seat.
So there will be three seats on each side for others.
So favourable cases = 8*6C3*3!*3! = 8*6!

All cases (sample space) = 8C4 * 4! * 4! = 8!

Required probability = (8*6!)/(8!)
[spoiler]= 1/7[/spoiler]

The OA is right.

Can you post the explanation for 4/7 here?

Cheers
Every job is a self-portrait of the person who did it. Autograph your work with excellence.

Kelley School of Business (Class of 2016)
GMAT Score: 750 V40 Q51 AWA 5 IR 8
https://www.beatthegmat.com/first-attemp ... tml#688494
Join the discussion

by macattack » Tue Aug 20, 2013 4:28 am
That how I would tackle it:
Total number of outcomes: 8C2= 28 (Number of ways two people can be seated in 8 seats)
Desired outcomes: 4 (Number of ways two people can be facing each other when seated on a rectangular table with four seats on each side)

Probability=4/28=1/7

The OA is right Google isn't.

Cheers
The GMAT can be destroyed.
Join the discussion

by GMATGuruNY » Tue Aug 20, 2013 6:29 am
sana.noor wrote:A rectangular table seats 4 people on each of two sides, with every person directly facing another person across the table. If eight people choose their seats at random, what is the probability that any two of them directly face each other?

A) 1/56

B) 1/8

C) 1/7

D) 15/56

E) 4/7
Each of the 8 people is to be seated at the table.
Question rephrased: Once A has been seated, what is the probability that B sits directly opposite A?
Since B must choose 1 of the 7 remaining seats, the probability that B selects the seat directly opposite A = 1/7.

The correct answer is C.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion