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

 It is currently 17 Feb 2019, 08:05

### 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 February
PrevNext
SuMoTuWeThFrSa
272829303112
3456789
10111213141516
17181920212223
242526272812
Open Detailed Calendar
• ### Free GMAT Algebra Webinar

February 17, 2019

February 17, 2019

07:00 AM PST

09:00 AM PST

Attend this Free Algebra Webinar and learn how to master Inequalities and Absolute Value problems on GMAT.
• ### Valentine's day SALE is on! 25% off.

February 18, 2019

February 18, 2019

10:00 PM PST

11:00 PM PST

We don’t care what your relationship status this year - we love you just the way you are. AND we want you to crush the GMAT!

# How many 4 digit numbers can be formed such that

Author Message
Manager
Joined: 25 Sep 2018
Posts: 186
Location: United States (CA)
Concentration: Finance, Strategy
GMAT 1: 640 Q47 V30
GPA: 3.97
WE: Investment Banking (Investment Banking)
How many 4 digit numbers can be formed such that  [#permalink]

### Show Tags

12 Oct 2018, 10:07
00:00

Difficulty:

45% (medium)

Question Stats:

20% (00:13) correct 80% (01:01) wrong based on 5 sessions

### HideShow timer Statistics

How many 4 digit numbers can be formed such that |A - D| = 2?
A)2000
B)1900
C)1800
D)1600
E)1500

_________________

Why do we fall?...So we can learn to pick ourselves up again

If you like the post, give it a KUDOS!

CEO
Joined: 11 Sep 2015
Posts: 3431
Re: How many 4 digit numbers can be formed such that  [#permalink]

### Show Tags

12 Oct 2018, 10:10
Top Contributor
Abhi077 wrote:
How many 4 digit numbers can be formed such that |A - D| = 2?
A)2000
B)1900
C)1800
D)1600
E)1500

What do A and D represent?
_________________

Test confidently with gmatprepnow.com

VP
Joined: 07 Dec 2014
Posts: 1157
How many 4 digit numbers can be formed such that  [#permalink]

### Show Tags

12 Oct 2018, 12:39
Abhi077 wrote:
How many 4 digit numbers can be formed such that |A - D| = 2?
A)2000
B)1900
C)1800
D)1600
E)1500

positive differences:
A has 8 poss: 2-9 inclusive
B has 10 poss
C has 10 poss
D has 1 poss
8*10*10*1=800 positive difference possibilities
negative differences:
A has 7 poss: 1-7 inclusive
B has 10 poss
C has 10 poss
D has 1 poss
7*10*10*1=700 negative difference possibilities
800+700=1500 total 4 digit numbers
E
How many 4 digit numbers can be formed such that   [#permalink] 12 Oct 2018, 12:39
Display posts from previous: Sort by