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

 It is currently 06 Jul 2015, 16:46

### 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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# if n and p are different positive prime numbers, which of

 Question banks Downloads My Bookmarks Reviews Important topics
Author Message
TAGS:
Senior Manager
Joined: 25 Dec 2003
Posts: 360
Location: India
Followers: 1

Kudos [?]: 17 [0], given: 0

if n and p are different positive prime numbers, which of [#permalink]  07 Jul 2004, 23:09
if n and p are different positive prime numbers, which of the integers (power 4 of n), (power 3 of p) and np has/have exactly 4 positive divisors?
a. (power 4 of n)
b. (power 3 of p)
c. np
d. np & (power 4 of n)
e. (power 3 of p) and np

Explaination, please
Thanks
_________________

Giving another SHOT

Director
Joined: 04 Jul 2004
Posts: 905
Followers: 4

Kudos [?]: 26 [0], given: 0

[#permalink]  08 Jul 2004, 02:19
(D)

n^4 have 1, n, n^2, n^3, n^4 (Total 5)
p^3 have 1, p, p^2, p^3 (Total 4)
np have 1, n, p, np (Total 4)
Senior Manager
Joined: 25 Dec 2003
Posts: 360
Location: India
Followers: 1

Kudos [?]: 17 [0], given: 0

[#permalink]  08 Jul 2004, 17:53
Thanks guys

E is the right answer. Good explaination JPV. You made a silly mistake by thaing the n^4 instead of n^3.

Thanks guys
_________________

Giving another SHOT

Director
Joined: 04 Jul 2004
Posts: 905
Followers: 4

Kudos [?]: 26 [0], given: 0

[#permalink]  09 Jul 2004, 05:31
OOPS!
By mistake I typed D rather than E.
Manager
Joined: 21 Jun 2004
Posts: 52
Followers: 1

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

[#permalink]  18 Jul 2004, 20:49
Cool question.

Think outside the box
Manager
Joined: 08 Jun 2004
Posts: 245
Location: INDIA
Followers: 2

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

[#permalink]  19 Jul 2004, 09:01
ex with the help of numbers...

lets take the two prime numbers as 2 and 3 ....

2^3 = 6 and this has 4 factors...

2^4 =16 more than four...

3^4 many factors...

3^3 = 27 has only four...

and 2*3 = 6 has four...

hope that helps ! Have fun
_________________

the whole worldmakes way for the man who knows wer he's going... good luck

Manager
Joined: 19 Jul 2004
Posts: 75
Followers: 1

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

[#permalink]  22 Jul 2004, 09:56
i got E after 3 mins......

cool one
_________________

To Strive, To Seek and Not to Yield

[#permalink] 22 Jul 2004, 09:56
Similar topics Replies Last post
Similar
Topics:
5 p and m are positive integers, and p is a prime number. If x 4 07 Sep 2013, 09:57
If r and p are two different prime numbers, which of the 4 07 Jun 2008, 14:31
N is a 3-digit positive integer, is N a prime number? 1) Its 7 05 May 2006, 22:43
Is N the difference of two prime numbers? 1). n=11 2). 7 22 Mar 2006, 17:29
If n and p are different positive prime numbers, which of 9 26 Feb 2006, 09:39
Display posts from previous: Sort by

# if n and p are different positive prime numbers, which of

 Question banks Downloads My Bookmarks Reviews Important topics

 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®.