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

It is currently 29 Jul 2015, 05:53
GMAT Club Tests

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

An integer is the product of four prime numbers, two of

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Manager
Manager
avatar
Joined: 06 Jul 2005
Posts: 106
Followers: 1

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

An integer is the product of four prime numbers, two of [#permalink] New post 25 Nov 2005, 16:47
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

An integer is the product of four prime numbers, two of which are the same. How many factors does the integer have?
Senior Manager
Senior Manager
avatar
Joined: 05 Oct 2005
Posts: 485
Followers: 1

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

 [#permalink] New post 25 Nov 2005, 17:13
12

3 prime factors, 1 of them in its second power

x^(2) , y^(1) , z^(1)

(2+1)*(1+1)*(1+1)

= 12
SVP
SVP
User avatar
Joined: 05 Apr 2005
Posts: 1731
Followers: 5

Kudos [?]: 40 [0], given: 0

Re: Another PS [#permalink] New post 25 Nov 2005, 17:16
let a = 2
b=3
c=5
integer = a x a x b x c = 2x2x3x5=60
factors of 60 = 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.

altogather 12.
Manager
Manager
avatar
Joined: 06 Jul 2005
Posts: 106
Followers: 1

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

 [#permalink] New post 25 Nov 2005, 19:28
Hey YB: I am little lost. How did you come up with that formula? Can you tell me the steps please?
SVP
SVP
User avatar
Joined: 28 May 2005
Posts: 1740
Location: Dhaka
Followers: 6

Kudos [?]: 82 [0], given: 0

 [#permalink] New post 26 Nov 2005, 00:18
because we have 3 different prime nmuber

so factors shoud be 3! = 6

now the duplicate one will be repeated twice so total factors = 6*2 =12
_________________

hey ya......

  [#permalink] 26 Nov 2005, 00:18
Display posts from previous: Sort by

An integer is the product of four prime numbers, two of

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.