Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

simple problem ....

Expert replies
by gibran » Mon May 19, 2008 10:45 am
If the symbol ## represents either addition, subtraction, multiplication, or division, what is the value of 6 ## 2?
(1) 10 ## 5 = 2
(2) 4 ## 2 = 2
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

PS - The symbol shown in the actual question is an inverted triangle .... but I couldn't get that image here ... so have used an alternate symbol ....

IMO, it is D but OA says A.
Join the discussion
Source: — Data Sufficiency |

Re: simple problem ....

by mim3 » Mon May 19, 2008 12:06 pm
gibran wrote:If the symbol ## represents either addition, subtraction, multiplication, or division, what is the value of 6 ## 2?
(1) 10 ## 5 = 2
(2) 4 ## 2 = 2
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

PS - The symbol shown in the actual question is an inverted triangle .... but I couldn't get that image here ... so have used an alternate symbol ....

IMO, it is D but OA says A.
For statement 2- the symbol could be division or subtraction which would yield two different values for 6 ## 2. Insufficient.
Join the discussion

Re: simple problem ....

by chidcguy » Tue May 20, 2008 5:06 pm
gibran wrote:If the symbol ## represents either addition, subtraction, multiplication, or division, what is the value of 6 ## 2?
(1) 10 ## 5 = 2
(2) 4 ## 2 = 2
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

PS - The symbol shown in the actual question is an inverted triangle .... but I couldn't get that image here ... so have used an alternate symbol ....

IMO, it is D but OA says A.
The Q is asking what is the ## operation out of these 4 op's

Statement 1

10 ## 5 =2

The only way for that to happen is ## is division

Statement 2

4 ##2 =2

Here ## can be / or -

Hence A
Join the discussion