Find all School-related info fast with the new School-Specific MBA Forum

It is currently 16 Apr 2014, 23:22

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

The symbol represents one of the following operations:

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Joined: 19 Nov 2009
Posts: 331
Followers: 4

Kudos [?]: 51 [0], given: 44

GMAT Tests User
The symbol represents one of the following operations: [#permalink] New post 30 Jun 2010, 23:52
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

63% (01:26) correct 36% (00:26) wrong based on 19 sessions
The symbol ▽ represents one of the following operations: addition, subtraction, multiplication, or division. What is the value of 3 ▽ 2?
(1) 0▽1 = 1
(2) 1▽0 = 1

OA is
[Reveal] Spoiler:
A
Kaplan GMAT Instructor
User avatar
Joined: 21 Jun 2010
Posts: 148
Location: Toronto
Followers: 32

Kudos [?]: 101 [0], given: 0

Re: 1000 DS [#permalink] New post 01 Jul 2010, 00:22
nsp007 wrote:
The symbol ▽ represents one of the following operations: addition, subtraction, multiplication, or division. What is the value of 3 ▽ 2?
(1) 0▽1 = 1
(2) 1▽0 = 1



Since 3 ▽ 2 will have a different value for each of the 4 operations, we need to know which operation ▽ represents to answer the question.

(1) 0▽1 = 1

0*1 = 0
0+1 = 1
0 / 1 = 0
0-1 = -1

Since only addition makes (1) true, "▽" must represent addition: sufficient (eliminate B, C, E).

(2) 1▽0 = 1

1*0 = 0
1+0 = 1
1/0 = undefined
1-0 = 1

Both addition and subtraction make (2) true. Accordingly, "▽" could represent either addition or subtraction. Since:

3-2

and

3+2

don't have the same value, (2) is insufficient (eliminate D).

Choose A!
_________________

Stuart Kovinsky
stuart.kovinsky@kaplan.com
Kaplan Test Prep & Admissions
Toronto Office
1-800-KAP-TEST
http://www.kaptest.com/GMAT

Prepare with Kaplan and save $150 on a course!

Image

Kaplan Reviews

Intern
Intern
Joined: 17 May 2010
Posts: 20
Followers: 0

Kudos [?]: 4 [0], given: 0

Re: 1000 DS [#permalink] New post 07 Jul 2010, 23:48
Can we assume in every case that a v b = a -/+/* b
Kaplan GMAT Instructor
User avatar
Joined: 21 Jun 2010
Posts: 148
Location: Toronto
Followers: 32

Kudos [?]: 101 [0], given: 0

Re: 1000 DS [#permalink] New post 08 Jul 2010, 00:34
hothihongcam wrote:
Can we assume in every case that a v b = a -/+/* b


No - the ▽ operation is one that's made up for this question - it's not a "real" mathematical term.

On the GMAT, we sometimes see symbolism questions (which are really just another form of function questions) - when those definitions appear on a question, they're only for the purpose of that particular question.

Don't worry, you didn't sleep through the class in high school in which your teacher covered "▽". :-D
_________________

Stuart Kovinsky
stuart.kovinsky@kaplan.com
Kaplan Test Prep & Admissions
Toronto Office
1-800-KAP-TEST
http://www.kaptest.com/GMAT

Prepare with Kaplan and save $150 on a course!

Image

Kaplan Reviews

Re: 1000 DS   [#permalink] 08 Jul 2010, 00:34
    Similar topics Author Replies Last post
Similar
Topics:
New posts The symbol ? represents one of the following bewakoof 7 16 Nov 2005, 13:28
New posts Given that the symbol represents one of the operations melguy 5 20 Jun 2011, 23:18
New posts 3 Experts publish their posts in the topic If the symbol § represents one of the following operations: mattycen 2 06 Oct 2013, 10:12
New posts Experts publish their posts in the topic The symbol ▽ represents one of the following operations... jlgdr 3 11 Oct 2013, 16:37
New posts 2 Experts publish their posts in the topic The symbol Ω represents one of the following operations: add ROckHIsT 4 29 Dec 2013, 02:30
Display posts from previous: Sort by

The symbol represents one of the following operations:

  Question banks Downloads My Bookmarks Reviews Important topics  


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

Powered by phpBB © phpBB Group and phpBB SEO

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®.