Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 21 Apr 2015, 05:37

### 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 n such that r<n<s? (1) s-r =5 (2) R

Author Message
TAGS:
Manager
Joined: 12 Jul 2003
Posts: 198
Followers: 1

Kudos [?]: 14 [0], given: 0

how many integers n such that r<n<s? (1) s-r =5 (2) R [#permalink]  19 Aug 2003, 20:20
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
how many integers n such that r<n<s?

(1) s-r =5
(2) R and S are not integers.

can someone explain how to tackle such questions.
would appreciate it
Intern
Joined: 23 Jun 2003
Posts: 16
Followers: 0

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

Re: DS question [#permalink]  19 Aug 2003, 21:06
doloris wrote:
how many integers n such that r<n<s?

(1) s-r =5
(2) R and S are not integers.

can someone explain how to tackle such questions.
would appreciate it

(1) If s and r are both real numbers (non-integers), n will equal 5. If s and r are both integers, n will equal 4. Therefore, insufficient.

(2) Insufficient since R and S could be anything

Combined, 1 and 2 give us all we need... we know how many values for n exist (5). Answer = C
Manager
Joined: 12 Jul 2003
Posts: 198
Followers: 1

Kudos [?]: 14 [0], given: 0

i do not understand.
Manager
Joined: 10 Jun 2003
Posts: 210
Location: Maryland
Followers: 2

Kudos [?]: 4 [0], given: 0

doloris wrote:
i do not understand.

Try plugging in numbers.
For A you must have numbers that are 5 apart. so lets use 10 and 5. we have 6,7,8,9. that is four numbers. now, since the question stem does not say that the numbers must be integers, try 10.5 and 5.5. now we have 6,7,8,9,10. thats five different integers. this is not suff

For B, alone, this tells us nothing. It could be the number of integers between 675.463 and 345674, or it could be 1 and 1.1. This tells us nothing alone.

Now combine the two. Remember from part 1 when we tried the non-integers. So any numbers that are 5 apart, but are not integers will always have five integers between them.Sufficient
Manager
Joined: 12 Jul 2003
Posts: 198
Followers: 1

Kudos [?]: 14 [0], given: 0

hi! thanks so much for the explanation.things are much clearer now.

regards
Similar topics Replies Last post
Similar
Topics:
How many integers N are there such that R < N < S ? 1) 2 01 Mar 2010, 01:38
How many integers n are there such that r<n<s? 1. 7 15 Apr 2007, 14:41
How many integers n are there such that r<n<s? 1) 5 30 Mar 2007, 12:57
How many integer n are there such that r<n<s? 1)s-r=5 8 13 Jan 2007, 11:48
How many integers n are there such that r < n < s? (1) 2 17 Jun 2006, 10:14
Display posts from previous: Sort by