It is currently 13 Dec 2017, 11:03

Decision(s) Day!:

CHAT Rooms | Ross R1 | Kellogg R1 | Darden R1 | Tepper R1


Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

M03-33

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 42583

Kudos [?]: 135519 [0], given: 12697

M03-33 [#permalink]

Show Tags

New post 15 Sep 2014, 23:21
Expert's post
6
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

67% (03:12) correct 33% (00:41) wrong based on 162 sessions

HideShow timer Statistics

Kudos [?]: 135519 [0], given: 12697

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 42583

Kudos [?]: 135519 [0], given: 12697

Re M03-33 [#permalink]

Show Tags

New post 15 Sep 2014, 23:21
Official Solution:


(1) The average (arithmetic mean) of \(x\) and \(z\) equals to \(y\). This statement tells that \(y=\frac{x+z}{2}\): if \(x=y=z=0\) then the answer is NO but if \(x=-1\), \(y=0\) and \(z=1\) then the answer is YES. Not sufficient.

(2) \(x = -z\). Not sufficient since no info about \(y\).

(1)+(2) Examples discussed for statement (1) are still valid, so we can have both NO (\(x=y=z=0\)) and YES (\(x=-1\), \(y=0\) and \(z=1\)) answers. Not sufficient.


Answer: E
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

Collection of Questions:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
Extra-hard Quant Tests with Brilliant Analytics

Kudos [?]: 135519 [0], given: 12697

Intern
Intern
avatar
Joined: 04 Sep 2014
Posts: 49

Kudos [?]: 15 [0], given: 45

Schools: CBS '18 (D)
GMAT ToolKit User
Re: M03-33 [#permalink]

Show Tags

New post 24 Jun 2015, 22:21
I think a set of 3 equally spaced numbers would also show that statement 1 is insufficient because of the property that mean = median.

Kudos [?]: 15 [0], given: 45

Current Student
User avatar
Joined: 12 Aug 2015
Posts: 298

Kudos [?]: 594 [0], given: 1474

Concentration: General Management, Operations
GMAT 1: 640 Q40 V37
GMAT 2: 650 Q43 V36
GMAT 3: 600 Q47 V27
GPA: 3.3
WE: Management Consulting (Consulting)
Re M03-33 [#permalink]

Show Tags

New post 12 Feb 2016, 00:11
I think this is a high-quality question and I agree with explanation. i think it s 700 lv q
_________________

KUDO me plenty

Kudos [?]: 594 [0], given: 1474

Senior Manager
Senior Manager
User avatar
Joined: 31 Mar 2016
Posts: 406

Kudos [?]: 85 [0], given: 197

Location: India
Concentration: Operations, Finance
GMAT 1: 670 Q48 V34
GPA: 3.8
WE: Operations (Commercial Banking)
GMAT ToolKit User Premium Member
Re M03-33 [#permalink]

Show Tags

New post 30 Aug 2016, 04:07
I think this is a high-quality question and I agree with explanation.

Kudos [?]: 85 [0], given: 197

Intern
Intern
avatar
B
Joined: 08 Oct 2014
Posts: 4

Kudos [?]: [0], given: 12

Reviews Badge CAT Tests
Re: M03-33 [#permalink]

Show Tags

New post 09 Nov 2017, 12:43
If x,y,z are consecutive then
why can't we take x,x+1,x+2? this satisfies st.1

Please help.

Kudos [?]: [0], given: 12

Expert Post
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 42583

Kudos [?]: 135519 [0], given: 12697

Re: M03-33 [#permalink]

Show Tags

New post 09 Nov 2017, 20:14

Kudos [?]: 135519 [0], given: 12697

Re: M03-33   [#permalink] 09 Nov 2017, 20:14
Display posts from previous: Sort by

M03-33

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  

Moderators: chetan2u, Bunuel



GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.