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
Vote for Target Test Prep, Newsweek Readers’ Choice Awards 2026
NEWSWEEK READERS’ CHOICE 2026

BIG NEWS! Target Test Prep has been nominated, and they’d love your vote!

TTP has worked incredibly hard to build the best test prep experience possible, and winning Newsweek’s 2026 Readers’ Choice Award for Best Test Prep would mean a lot to them. If TTP has helped you, they’d be incredibly grateful for your vote. You can vote once each day through September 9.

Vote for TTP
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
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
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.

715+ 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.

Integer properties

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Newbie | Next Rank: 10 Posts
Posts: 5
Joined: Sun Jul 18, 2010 11:45 am
by daflower » Mon Jul 19, 2010 8:31 pm
A certain list consists of several different integers. Is the product of all the integers in the list positive?

(1) The product of the greatest and smallest number is positive
(2) There is an even number of integers on the list

A) Statement 1 alone is sufficient
B) Statement 2 alone is sufficient
A) Both statements together are sufficient, but neither ALONE is sufficient
A) Each statement alone is sufficient
A) Statement 1 and 2 are not sufficient
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 1179
Joined: Sun Apr 11, 2010 9:07 pmFollowed by: 88 members
Location: Milpitas, CA
Thanked: 447 times

by Rahul@gurome » Mon Jul 19, 2010 9:55 pm
daflower wrote:A certain list consists of several different integers. Is the product of all the integers in the list positive?

(1) The product of the greatest and smallest number is positive
(2) There is an even number of integers on the list

A) Statement 1 alone is sufficient
B) Statement 2 alone is sufficient
C) Both statements together are sufficient, but neither ALONE is sufficient
D) Each statement alone is sufficient
E) Statement 1 and 2 are not sufficient
(1) 1st statement implies that either both of them are positive or both of them negative. It means all the integers between largest and positive integers should also have the same sign. So, either every integer in the list is positive, or every integer in the list is negative.
So, (1) is NOT SUFFICIENT.

(2) 2nd statement implies that product of integers is either positive or negative.
So, (2) is NOT SUFFICIENT.

Combining (1) & (2), the set of integers are either all positive and even or negative and even, which implies that the product will always be positive.

The correct answer is[spoiler] (C)[/spoiler].
Rahul Lakhani
Quant Expert
Gurome, Inc.
https://www.GuroMe.com
On MBA sabbatical (at ISB) for 2011-12 - will stay active as time permits
1-800-566-4043 (USA)
+91-99201 32411 (India)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 1052
Joined: Fri May 21, 2010 1:30 amFollowed by: 98 members
Thanked: 335 times

by Patrick_GMATFix » Tue Jul 20, 2010 12:02 pm
Rahul explained this well. For the product of all integers to be positive, there must be an even number of negative values (so that the negatives will cancel each other out).

(1) tells us that all values have the same sign
(2) tells us that there are an even number of values

Merging the statements guarantees that we have an even number of negatives (either 0 which is even, or some other even number of values all negative)

The answer is C. A more complete discussion and take-away lesson as well as step-by-step video solution can be found at GMATPrep Question 1106. To practice similar questions, set topic='Number Properties' and difficulty='600-700' in the Drill Generator

Good luck,
-Patrick
  • Ask me about tutoring.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1