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

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

Answer Please!!!!

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Junior | Next Rank: 30 Posts
Posts: 26
Joined: Wed Jun 20, 2007 2:01 am

by harry_x1 » Wed Jun 27, 2007 7:19 am
as per the statement k is a set of following integers[-25,-24,-23......,0,......22,23]
now sum of all the integers in the following set will be equal to -25+(-24)= -49 ans
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 400
Joined: Sat Mar 10, 2007 4:04 amFollowed by: 1 member
Thanked: 1 times

Re: Answer Please!!!!

by f2001290 » Thu Jun 28, 2007 6:04 am
Shadow wrote:The sum of all the integers k such that –26 < k < 24 is

A. 0
B. -2
C. -25
D. -49
E. -51


Could anyone please let me know the answer for the above question?
Add -25 + -24 + -23 + .... + 0 + 1 + 2 +3 + ... -23

We are left out with -25 + -24 = -49
Hence D
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 200
Joined: Sun Jun 17, 2007 10:46 am
Location: Canada
Thanked: 9 times

by beeparoo » Sat Jul 07, 2007 12:54 pm
Another way to look at this problem:

For CONSECUTIVE numbers in a set only...

SUM = (# of terms) x (middle number)

Determine # of terms:
23 - (-25) + 1 = 49
Thus, 49 terms in the set

Determine middle number:
[-25 + 23]/2 = -1
Thus, the middle number of the set is -1
NOTE: You can use upper and lower limit to determine the median when you have a consecutive set only

Finally, SUM = (49) x (-1) = -49

The previous methods are a lot faster and easier here. But in other questions where consecutive sets are apparent, these skills are crucial.

Later beh-beh
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 31
Joined: Thu Jun 21, 2007 9:03 pm
Location: Chennai

by Shadow » Tue Jul 10, 2007 3:18 am
Thanks a lot for the detailed explanation which will help me solve problems of this nature
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1