BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

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.

★★★★★5.0559 reviews
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

130-point score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 559 reviewsTarget Test Prep

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

set 28 q 37

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 144
Joined: Fri Apr 13, 2007 2:25 am
by radhika1306 » Mon Sep 17, 2007 6:52 pm
In a meeting of 3 representatives from each of 6 different companies, each person shook hands
with every person not from his or her own company. If the representatives did not shake hands
with people from their own company, how many handshakes took place?
A. 45
B. 135
C. 144
D. 270
E. 288
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 321
Joined: Tue Aug 28, 2007 5:42 am
Thanked: 1 times

by kajcha » Mon Sep 17, 2007 7:05 pm
Ans D

There are 18 people in conf and each shaked hand with 15 people

So 18*15 = 270
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Senior | Next Rank: 100 Posts
Posts: 45
Joined: Wed Jun 20, 2007 12:40 pm
Location: Cleveland, OH

by niks_01.27 » Mon Sep 17, 2007 7:06 pm
There are total 18 person. Each person shook hands 15 persons (leaving 2 from his own company and 1, himself).

So total nbr of hand shakes are 15 x 18 = 270.

Whats the answer?
regards
niks...
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Senior | Next Rank: 100 Posts
Posts: 45
Joined: Wed Jun 20, 2007 12:40 pm
Location: Cleveland, OH

by niks_01.27 » Mon Sep 17, 2007 7:28 pm
Anonymous wrote:I am getting (B) as the answer.

Team 1 shakes hand with 15 people and hence 3x15 =45
Team 2 has already shaked hands with Team 1.
Team 2 shakes hand with 12 people and hence 3x12 =36
and so on gives,

3x15+3x12+3x9+3x6+3x3=45+36+27+18+9=135.
My bad, I was in a hurry to solve the question. Your answer makes sense.
regards
niks...
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 144
Joined: Fri Apr 13, 2007 2:25 am

by radhika1306 » Tue Sep 18, 2007 7:39 am
Answer is B
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 55
Joined: Wed Mar 18, 2009 9:56 am
Thanked: 2 times

by apple100 » Sun Mar 22, 2009 3:17 pm
Anonymous wrote:I am getting (B) as the answer.

Team 1 shakes hand with 15 people and hence 3x15 =45
Team 2 has already shaked hands with Team 1.
Team 2 shakes hand with 12 people and hence 3x12 =36
and so on gives,

3x15+3x12+3x9+3x6+3x3=45+36+27+18+9=135.
is there a shortcut to this problem besides this method?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 148
Joined: Wed Dec 10, 2008 5:13 pm
Location: SF, CA
Thanked: 12 times

by lilu » Sun Mar 22, 2009 3:53 pm
Each person has to shake hands with 15 people (18 total-2 from his team -1 himself=15)
And there are 18 people *15 handshakes = 270,
now we need 2 people to make a handshake, so we need to divide 270 by 2-->135, otherwise we'd be counting each combination two times
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1