How many integers are there between, but not including : DS Archive
Check GMAT Club App Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 03 Dec 2016, 11:59

### 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 June
Open Detailed Calendar

# How many integers are there between, but not including

Author Message
Intern
Joined: 23 Oct 2008
Posts: 23
Followers: 0

Kudos [?]: 22 [0], given: 0

How many integers are there between, but not including [#permalink]

### Show Tags

13 Nov 2008, 02:01
00:00

Difficulty:

15% (low)

Question Stats:

82% (01:33) correct 18% (01:00) wrong based on 49 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

How many integers are there between, but not including, integers r and s ?

(1) s - r = 10
(2) There are 9 integers between, but not including, r + 1 and s + 1.
[Reveal] Spoiler: OA
Manager
Joined: 30 Sep 2008
Posts: 111
Followers: 1

Kudos [?]: 19 [0], given: 0

### Show Tags

13 Nov 2008, 02:05
(1) s - r = 10 => the number of the integer between but not include = 9
Manager
Joined: 23 Jul 2008
Posts: 203
Followers: 1

Kudos [?]: 112 [0], given: 0

### Show Tags

13 Nov 2008, 12:15
yhc25 wrote:
I am confused by the explanation of OG(11th ed) to Q61 in Data Sufficiency on p282.

Q60.
How many integers are there between, but not including, integers r and s?
(1) s - r = 10
(2) There are 9 integers between, but not including r + 1 and s + 1.

I understand that (2) is sufficient, but I don't know why (1) is also sufficient.

The question doesn't say anything about whether all integers between r and s are different or whether they can be repeated. If they can be repeated, there can be more than 9 integers within the range of r and s.

We have selected 2 numbers at random r and s and question clearly says integers between, hence the question of repeating does not arise.
Re: Property of Numbers   [#permalink] 13 Nov 2008, 12:15
Display posts from previous: Sort by

# How many integers are there between, but not including

 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®.