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

 It is currently 18 Dec 2018, 19:28

### 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

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

## Events & Promotions

###### Events & Promotions in December
PrevNext
SuMoTuWeThFrSa
2526272829301
2345678
9101112131415
16171819202122
23242526272829
303112345
Open Detailed Calendar
• ### Happy Christmas 20% Sale! Math Revolution All-In-One Products!

December 20, 2018

December 20, 2018

10:00 PM PST

11:00 PM PST

This is the most inexpensive and attractive price in the market. Get the course now!
• ### Key Strategies to Master GMAT SC

December 22, 2018

December 22, 2018

07:00 AM PST

09:00 AM PST

Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

# M03-08

Author Message
TAGS:

### Hide Tags

Math Expert
Joined: 02 Sep 2009
Posts: 51280

### Show Tags

15 Sep 2014, 23:19
00:00

Difficulty:

5% (low)

Question Stats:

77% (00:27) correct 23% (00:26) wrong based on 183 sessions

### HideShow timer Statistics

Is triangle $$ABC$$ equilateral?

(1) $$AB = 1$$

(2) $$BC + AC = 2$$

_________________
Math Expert
Joined: 02 Sep 2009
Posts: 51280

### Show Tags

15 Sep 2014, 23:19
Official Solution:

The triangle is equilateral when all of its sides have the same length.

Statement (1) by itself is insufficient. We don't know anything about the length of the other sides.

Statement (2) by itself is insufficient. Knowing that $$BC + AC = 2$$, doesn't give us enough information to be sure that the triangle is equilateral. Suppose $$BC=1.1$$ and $$AC=0.9$$.

Statements (1) and (2) combined are insufficient. Combining the two statements doesn't ensure that BC and AC equal exactly 1 each.

_________________
Intern
Joined: 18 Mar 2015
Posts: 13

### Show Tags

14 Dec 2017, 03:13
Hi,

I got C.

Since we know :[A-B] <C<A+B

We can easily say its not an equilateral triangle

pls brunei can you specify
Math Expert
Joined: 02 Sep 2009
Posts: 51280

### Show Tags

14 Dec 2017, 04:24
girishiyer wrote:
Hi,

I got C.

Since we know :[A-B] <C<A+B

We can easily say its not an equilateral triangle

pls brunei can you specify

How?

Case 1: all sides are of lengths 1.
Case 2: sides are: 0.9, 1, 1.1.
_________________
Intern
Joined: 18 Mar 2015
Posts: 13

### Show Tags

29 Dec 2017, 07:35
thanks bunuel for clarifying
Re: M03-08 &nbs [#permalink] 29 Dec 2017, 07:35
Display posts from previous: Sort by

# M03-08

Moderators: chetan2u, Bunuel

 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®.