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

 It is currently 16 Dec 2018, 20:06

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
• 10 Keys to nail DS and CR questions

December 17, 2018

December 17, 2018

06:00 PM PST

07:00 PM PST

Join our live webinar and learn how to approach Data Sufficiency and Critical Reasoning problems, how to identify the best way to solve each question and what most people do wrong.
• FREE Quant Workshop by e-GMAT!

December 16, 2018

December 16, 2018

07:00 AM PST

09:00 AM PST

Get personalized insights on how to achieve your Target Quant Score.

A group of Building is numbered using all the even numbers

Author Message
TAGS:

Hide Tags

Intern
Joined: 16 Dec 2012
Posts: 14
GMAT 1: 710 Q50 V35
A group of Building is numbered using all the even numbers  [#permalink]

Show Tags

02 Aug 2018, 01:56
00:00

Difficulty:

15% (low)

Question Stats:

74% (00:44) correct 26% (01:02) wrong based on 61 sessions

HideShow timer Statistics

A group of buildings is numbered using all the even numbers between 412 and 680 inclusive, How many buildings are in the group ?

A:- 134
B:- 135
C:- 137
D:- 139
E:- 143
MBA Section Director
Affiliations: GMATClub
Joined: 22 May 2017
Posts: 1491
Concentration: Nonprofit
GPA: 4
WE: Engineering (Computer Software)
Re: A group of Building is numbered using all the even numbers  [#permalink]

Show Tags

02 Aug 2018, 03:10
1
1
There are equal number of odd and even numbers between 412 and 680

So if we can find the difference between 412 and 680 and divide it by 2, we get the number of even or odd numbers

We also have to add 1 to the result since the the above calculation doesn't include 412 as even number

Total number of buildings = $$\frac{680-412}{2} + 1$$

= $$\frac{268}{2} + 1$$ = $$134 + 1 = 135$$

Hence option B
_________________
Intern
Joined: 24 Jul 2018
Posts: 8
Re: A group of Building is numbered using all the even numbers  [#permalink]

Show Tags

02 Aug 2018, 03:19
Ans: B

(680-412)/1 + 1 = 269

680 and 412 are both even numbers
=> number of even numbers is 1 more than number of odd numbers

269 = 135 + 134
=> 135

Posted from my mobile device
_________________

"Experts who acknowledge the full extent of their ignorance may expect to be replaced by more confident competitors, who are better able to gain the trust of clients. An unbiased appreciation of uncertainty is a cornerstone of rationality—but it is not what people and organizations want." - Daniel Kahnemen

VP
Joined: 07 Dec 2014
Posts: 1129
Re: A group of Building is numbered using all the even numbers  [#permalink]

Show Tags

02 Aug 2018, 17:34
Amankatyal wrote:
A group of buildings is numbered using all the even numbers between 412 and 680 inclusive, How many buildings are in the group ?

A:- 134
B:- 135
C:- 137
D:- 139
E:- 143

let x=number of buildings
412+2(x-1)=680
x=135
B
Re: A group of Building is numbered using all the even numbers &nbs [#permalink] 02 Aug 2018, 17:34
Display posts from previous: Sort by