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

It is currently 30 Aug 2014, 10:24

Close

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
Your Progress

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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

How many integers between 100 & 150,inclusive,cannot be

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 20 Feb 2007
Posts: 81
Followers: 1

Kudos [?]: 1 [0], given: 0

How many integers between 100 & 150,inclusive,cannot be [#permalink] New post 22 Oct 2007, 21:29
How many integers between 100 & 150,inclusive,cannot be divided by 3 or 5?



Is there a easier way of doing this apart from counting the numbers?
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1157
Followers: 6

Kudos [?]: 110 [0], given: 0

GMAT Tests User
 [#permalink] New post 22 Oct 2007, 21:40
150/3- 102/3 = 16 ---> 17 numbers

150/5-100/5 = 10 ---> 11 numbers

150/15-105/15 = 3 --> 4 numbers

total

17+11-4 = 24 numbers

:)
Manager
Manager
avatar
Joined: 20 Feb 2007
Posts: 81
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 22 Oct 2007, 21:44
The answer is given as 27....is it wrong?
Manager
Manager
avatar
Joined: 20 Feb 2007
Posts: 81
Followers: 1

Kudos [?]: 1 [0], given: 0

 [#permalink] New post 22 Oct 2007, 21:55
KillerSquirrel, please help me out on this....
I get the number 150/3 - 102/3 = 16....do we have to add 1 to each cause its inclusive?
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5097
Location: Singapore
Followers: 17

Kudos [?]: 136 [0], given: 0

GMAT Tests User
 [#permalink] New post 23 Oct 2007, 00:51
# of terms divisible by 3 --> (150-102)/3 + 1 = 17
# of terms divisible by 5 --> (150-100)/5 + 1 = 11
# of terms divsible by both 5 and 3 --> (150-105)/15 + 1 = 4

Drawing a venn diagram, you can solve for:

# of terms divisible by both 5 and 3 -> 4
# of terms divisible by 3 only -> 13
# of terms divisible by 5 only -> 7

Total = 7+4+13 = 24
GMAT Instructor
avatar
Joined: 04 Jul 2006
Posts: 1270
Location: Madrid
Followers: 23

Kudos [?]: 121 [0], given: 0

 [#permalink] New post 23 Oct 2007, 01:07
KillerSquirrel wrote:
150/3- 102/3 = 16 ---> 17 numbers

150/5-100/5 = 10 ---> 11 numbers

150/15-105/15 = 3 --> 4 numbers

total

17+11-4 = 24 numbers

:)


Are you counting the number of integers that CAN be divided by 3 or by 5?
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jul 2004
Posts: 5097
Location: Singapore
Followers: 17

Kudos [?]: 136 [0], given: 0

GMAT Tests User
 [#permalink] New post 23 Oct 2007, 01:08
kevincan wrote:
KillerSquirrel wrote:
150/3- 102/3 = 16 ---> 17 numbers

150/5-100/5 = 10 ---> 11 numbers

150/15-105/15 = 3 --> 4 numbers

total

17+11-4 = 24 numbers

:)


Are you counting the number of integers that CAN be divided by 3 or by 5?

Haha... read it wrong =)

Answer should be ((150-100)+1)-24 = 27 =)
VP
VP
User avatar
Joined: 08 Jun 2005
Posts: 1157
Followers: 6

Kudos [?]: 110 [0], given: 0

GMAT Tests User
 [#permalink] New post 23 Oct 2007, 11:54
ywilfred wrote:
kevincan wrote:
KillerSquirrel wrote:
150/3- 102/3 = 16 ---> 17 numbers

150/5-100/5 = 10 ---> 11 numbers

150/15-105/15 = 3 --> 4 numbers

total

17+11-4 = 24 numbers

:)


Are you counting the number of integers that CAN be divided by 3 or by 5?

Haha... read it wrong =)

Answer should be ((150-100)+1)-24 = 27 =)


Yes ! I also fell to that trap.

:?
  [#permalink] 23 Oct 2007, 11:54
    Similar topics Author Replies Last post
Similar
Topics:
17 How many 3-digit integers between 100 and 200 have a digit AVakil 16 19 Dec 2007, 05:53
How many integers between 100 and 150, inclusive, cannot be salr15 14 22 Jun 2007, 10:42
How many integers between 100 and 150 inclusive, can be sudhagar 10 25 Oct 2005, 20:59
How many integers, between 100 and 150, inclusive, can be NM 5 01 Jul 2005, 14:14
How many integers between 100 and 150, inclusive, can be Seyi 3 07 Dec 2004, 17:23
Display posts from previous: Sort by

How many integers between 100 & 150,inclusive,cannot be

  Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Privacy Policy| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

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®.