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 →

consecutive odd (magoosh - very hard)

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 15
Joined: Tue Jun 28, 2011 4:43 pm
by gopinathhyd » Sat Mar 10, 2012 6:30 am
Set K consists of a finite number of consecutive odd integers. If x is the smallest number in K and y is the greatest, then y - x =

(1) The average (arithmetic mean) of set K is -36.

(2) There are 8 numbers in set K.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Legendary Member
Posts: 581
Joined: Sun Apr 03, 2011 7:53 amFollowed by: 5 members
Thanked: 52 times

by killer1387 » Sat Mar 10, 2012 6:52 am
gopinathhyd wrote:Set K consists of a finite number of consecutive odd integers. If x is the smallest number in K and y is the greatest, then y - x =

(1) The average (arithmetic mean) of set K is -36.

(2) There are 8 numbers in set K.

1. only we could know that the number of terms is even.
i.e. .........-37, -35...........(even no.)
insufficient

2. suppose
the series is
n, n+2, n+4......n+14 where n is any odd integer.

that are 8 term
difference =14

hence B is correct
Last edited by killer1387 on Sat Mar 10, 2012 7:40 am, edited 1 time in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 15
Joined: Tue Jun 28, 2011 4:43 pm

by gopinathhyd » Sat Mar 10, 2012 7:11 am
Even I thought C, but ans was B, I did not understand,

Since the question does not say anything on positive and negative numbers,(we get two different answers when we consider -ve odd consecutive and all +ve odd consecutives,) I think the question is wrong in magoosh, or my solution is wrong.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 581
Joined: Sun Apr 03, 2011 7:53 amFollowed by: 5 members
Thanked: 52 times

by killer1387 » Sat Mar 10, 2012 7:34 am
gopinathhyd wrote:Even I thought C, but ans was B, I did not understand,

Since the question does not say anything on positive and negative numbers,(we get two different answers when we consider -ve odd consecutive and all +ve odd consecutives,) I think the question is wrong in magoosh, or my solution is wrong.
No B is correct I had missed out please check my post above

* in the difference "n" will get cancelled so it is immaterial if its positive or negative
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1