GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 20 Apr 2019, 21:27

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

If each of the two lines L1 and L2 is parallel to line L3, which of th

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

Hide Tags

 
Manager
Manager
avatar
Joined: 20 Mar 2015
Posts: 58
GMAT ToolKit User
If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 19 Jun 2016, 11:51
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

84% (00:37) correct 16% (01:01) wrong based on 76 sessions

HideShow timer Statistics

If each of the two lines L1 and L2 is parallel to line L3, which of the following must be true?

(A) Lines L1 , L2, and L3 lie in the same plane.
(B) Lines L1 , ,L2 and L3 lie in different planes.
(C) Line L1 is parallel to line L2 .
(D) Line L1 is the same line as line L2.
(E) Line L1 is the same line as line L3 .


Aren't answers D and E contradicting with questions?
Manager
Manager
User avatar
Joined: 19 Dec 2015
Posts: 111
Location: United States
GMAT 1: 720 Q50 V38
GPA: 3.8
WE: Information Technology (Computer Software)
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 19 Jun 2016, 13:12
If each of the two lines L1 and L2 is parallel to line L3, it means L1 || L2 || L3. And thats exactly in answer choice C.
Senior PS Moderator
User avatar
V
Joined: 26 Feb 2016
Posts: 3386
Location: India
GPA: 3.12
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 01 Aug 2017, 07:33
Bunuel wrote:
If each of the two lines m and n are parallel to line p, which of the following must be true?

(A) Lines m, n and p lie in the same plane
(B) Lines m, n and p are in different planes
(C) Line m is parallel to line n
(D) Line m is the same line as line n
(E) Line m is the same line as line p


The rest of the statements may or may not be true.
But, if both line m || p and n || p, line m must be definitely parallel to n(Option C)
_________________
You've got what it takes, but it will take everything you've got
CEO
CEO
User avatar
D
Status: GMATINSIGHT Tutor
Joined: 08 Jul 2010
Posts: 2906
Location: India
GMAT: INSIGHT
Schools: Darden '21
WE: Education (Education)
Reviews Badge
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 01 Aug 2017, 08:07
Bunuel wrote:
If each of the two lines m and n are parallel to line p, which of the following must be true?

(A) Lines m, n and p lie in the same plane
(B) Lines m, n and p are in different planes
(C) Line m is parallel to line n
(D) Line m is the same line as line n
(E) Line m is the same line as line p


(A) Lines m, n and p lie in the same plane - INCORRECT
Reasons: m and p could be in one plane and n and p could be in another plane hence not necessarily they all will be in same plane

(B) Lines m, n and p are in different planes - INCORRECT
Reasons: m, n and p could all be in one plane as well

(C) Line m is parallel to line n - CORRECT
Since m and p are parallel on one part and n and p are parallel on other plane then there must be a plane containing lines n and m as well hence they must be parallel not necessarily in the same plane containing line p as well

(D) Line m is the same line as line n - INCORRECT

(E) Line m is the same line as line p - INCORRECT

ANswer: Option C
_________________
Prosper!!!
GMATinsight
Bhoopendra Singh and Dr.Sushma Jha
e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772
Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi
http://www.GMATinsight.com/testimonials.html

ACCESS FREE GMAT TESTS HERE:22 ONLINE FREE (FULL LENGTH) GMAT CAT (PRACTICE TESTS) LINK COLLECTION
Target Test Prep Representative
User avatar
G
Status: Head GMAT Instructor
Affiliations: Target Test Prep
Joined: 04 Mar 2011
Posts: 2825
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 02 Aug 2017, 13:35
Bunuel wrote:
If each of the two lines m and n are parallel to line p, which of the following must be true?

(A) Lines m, n and p lie in the same plane
(B) Lines m, n and p are in different planes
(C) Line m is parallel to line n
(D) Line m is the same line as line n
(E) Line m is the same line as line p


We have a theorem that says:

If two lines each are parallel to a third line, then they are parallel to each other.

Since line m and line n are both parallel to line p,lines m and n must also be parallel to each other.

Answer: C
_________________

Jeffrey Miller

Head of GMAT Instruction

Jeff@TargetTestPrep.com
TTP - Target Test Prep Logo
122 Reviews

5-star rated online GMAT quant
self study course

See why Target Test Prep is the top rated GMAT quant course on GMAT Club. Read Our Reviews

Intern
Intern
avatar
B
Joined: 21 Dec 2018
Posts: 3
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 05 Apr 2019, 14:50
How can we assume L1 /= L2? If L1 and L2 are the same lines then they intersect infinitely and are therefore not parallel...
Manager
Manager
avatar
S
Joined: 25 Feb 2019
Posts: 193
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 05 Apr 2019, 20:55
t4hwg wrote:
How can we assume L1 /= L2? If L1 and L2 are the same lines then they intersect infinitely and are therefore not parallel...



There is a theoram which says

if two lines are parallel to a third line , then

all three lines are parallel to one another

means
L1 ||L3

and L2 || L3

then ,

L1 || L2 || L3



hope this helps

award kudos if helpful

Posted from my mobile device
Intern
Intern
avatar
B
Joined: 21 Dec 2018
Posts: 3
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th  [#permalink]

Show Tags

New post 06 Apr 2019, 08:32
m1033512 wrote:
t4hwg wrote:
How can we assume L1 /= L2? If L1 and L2 are the same lines then they intersect infinitely and are therefore not parallel...



There is a theoram which says

if two lines are parallel to a third line , then

all three lines are parallel to one another

means
L1 ||L3

and L2 || L3

then ,

L1 || L2 || L3



hope this helps

award kudos if helpful

Posted from my mobile device


That seems rather arbitrary though doesn’t it?
For example:
L1 is (0,2) through (5,2)
L2 is Y=2
L3 is Y=0

In this case, both lines 1 and 2 are parallel to 3 but not to each other. Is there some special line nomenclature that I’m missing?
GMAT Club Bot
Re: If each of the two lines L1 and L2 is parallel to line L3, which of th   [#permalink] 06 Apr 2019, 08:32
Display posts from previous: Sort by

If each of the two lines L1 and L2 is parallel to line L3, which of th

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


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| 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®.