It is currently 21 Oct 2017, 11:21

### 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

# GMAT prep PT1 - Integer

Author Message
Manager
Joined: 04 Dec 2008
Posts: 104

Kudos [?]: 225 [0], given: 2

GMAT prep PT1 - Integer [#permalink]

### Show Tags

03 Mar 2009, 07:06
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

I don't understand why answer is C and not B.
Attachment:
GMAT prep PT1 Q15-cards.doc [63 KiB]

Kudos [?]: 225 [0], given: 2

Senior Manager
Joined: 30 Nov 2008
Posts: 484

Kudos [?]: 361 [1], given: 15

Schools: Fuqua
Re: GMAT prep PT1 - Integer [#permalink]

### Show Tags

03 Mar 2009, 10:38
1
KUDOS
Since the numbers are small, I went in a rather blunt way. It is given that the product of the two consecutive numbers should be between 15 and 200.

So n(n+1) > 15. The min value possible here is when n = 4.
Also n(n+1) < 200. The max value for n is possible when n = 13.

My Ans will C. 4 and 13.

Lesson Learnt: -

1. BETWEEN does not include the boundary numbers.
2. When explicitly mentioned INCLUSIVE, only then will the boundary numbers be included.

Last edited by mrsmarthi on 06 Mar 2009, 08:35, edited 1 time in total.

Kudos [?]: 361 [1], given: 15

Senior Manager
Joined: 23 May 2008
Posts: 414

Kudos [?]: 460 [0], given: 14

Re: GMAT prep PT1 - Integer [#permalink]

### Show Tags

04 Mar 2009, 23:04
nice explanation mrsmarthi...........
+1 from my side.......

Kudos [?]: 460 [0], given: 14

Manager
Status: Preparing Apps
Joined: 04 Mar 2009
Posts: 91

Kudos [?]: 272 [0], given: 4

Concentration: Marketing, Strategy
GMAT 1: 650 Q48 V31
GMAT 2: 710 Q49 V38
WE: Information Technology (Consulting)
Re: GMAT prep PT1 - Integer [#permalink]

### Show Tags

06 Mar 2009, 08:06
mrsmarthi wrote:
Since the numbers are small, I went in a rather blunt way. It is given that the product of the two consecutive numbers should be between 15 and 200.

So n(n+1) >= 15. The min value possible here is when n = 4.
Also n(n+1) <= 200. The max value for n is possible when n = 13.

My Ans will C. 4 and 13.

Shouldnt it be this ?
So n(n+1) > 15. The min value possible here is when n = 4.
Also n(n+1) < 200. The max value for n is possible when n = 13.

Kudos [?]: 272 [0], given: 4

Senior Manager
Joined: 30 Nov 2008
Posts: 484

Kudos [?]: 361 [0], given: 15

Schools: Fuqua
Re: GMAT prep PT1 - Integer [#permalink]

### Show Tags

06 Mar 2009, 08:39
aalriy,

Thank you for pointing it out. Sometimes, I get confused whether to include the boundary numbers or not. But looks like like when BETWEEN alone is mentioned we should not consider the boundary numbers.

Kudos [?]: 361 [0], given: 15

Re: GMAT prep PT1 - Integer   [#permalink] 06 Mar 2009, 08:39
Display posts from previous: Sort by