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

It is currently 27 Jul 2014, 22:25

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 distinct prime factors do 4! and 8! have in common?

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Manager
Manager
avatar
Joined: 18 Aug 2005
Posts: 86
Location: Italy, Rome caput mundi
Followers: 1

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

How many distinct prime factors do 4! and 8! have in common? [#permalink] New post 27 Sep 2005, 03:13
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

50% (01:51) correct 50% (00:21) wrong based on 1 sessions
How many distinct prime factors do 4! and 8! have in common?


4

3

2

1

0
_________________

"To win the battle you need to last 15 minutes longer than your enemies"

Current Student
User avatar
Joined: 29 Jan 2005
Posts: 5253
Followers: 23

Kudos [?]: 120 [0], given: 0

GMAT Tests User Reviews Badge
 [#permalink] New post 29 Sep 2005, 06:45
C. 2 and 3. 8!= 40320 and 4!=24. Only 2 and 3 divide evenly into both numbers. Probably easier to work with the smaller number first in this example.
Manager
Manager
avatar
Joined: 06 Aug 2005
Posts: 198
Followers: 3

Kudos [?]: 5 [0], given: 0

GMAT Tests User
 [#permalink] New post 29 Sep 2005, 08:58
You should not be working out 4! and 8! in this sort of question.

4! = 1 * 2 * 3 * 4
8! = 4! * 5 * 6 * 7 * 8

So the answer can only be a factor of 4!.
1 is irrelevant.
4 = 2^2.
So the answer is 2 and 3.
  [#permalink] 29 Sep 2005, 08:58
    Similar topics Author Replies Last post
Similar
Topics:
1 Experts publish their posts in the topic How many pairs have one or more prime factors common dxx 4 12 May 2014, 13:02
Experts publish their posts in the topic How many distinct positive factors does 30,030 have? Drik 1 18 Dec 2012, 03:07
How many prime factors does N have? shivanigs 7 06 Oct 2012, 00:31
How many different prime factors does N have? (1) 2N has 4 rahulraao 3 05 Oct 2005, 02:15
How many different prime factors does N have? (1) 2N has 4 ashkg 8 12 Jun 2005, 11:35
Display posts from previous: Sort by

How many distinct prime factors do 4! and 8! have in common?

  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®.