M02 Q18 Is the total number of divisors of x^3 a multiple

Oldest

Best Reply

Author

Message

Manager

Joined: 14 Dec 2011

Posts: 52

Followers: 0

Kudos [?]: 2 [0], given: 34

M02 Q18 Is the total number of divisors of x^3 a multiple [#permalink]

18 Jan 2013, 11:07

00:00

Question Stats:

100% (00:00) correct

0% (00:00) wrong

based on 0 sessions

Is the total number of divisors of x^3 a multiple of the total number of divisors of y^2 ?

(1) x = 4
(2) y = 6

I believe answer is no. I just want to confirm whether i am going to the right direction.
From (1) 4^3 = 64 and from (2) 6^2 = 36.
# of divisors of 64 are 1,2,4,8,16,32,64
# of divisors of 36 are 1,2,3,4,6,9,12,18,36

Total number of divisors of 64 are not multiple of total number of divisors of 36.

Thanks & Regards
Vinni

[Reveal] Spoiler: OA

Senior Manager

Joined: 27 Jun 2012

Posts: 413

Followers: 23

Kudos [?]: 193 [1] , given: 171

Re: M02 Q18 Is the total number of divisors of x^3 a multiple [#permalink]

18 Jan 2013, 11:28

This post received
KUDOS

This is a YES/NO type question. As far as the statement or combination of two statements are 100% SUFFICIENT to answer YES or NO to the question, you can choose that answer choice.

(1) x = 4
INSUFFICIENT: We dont know y
(2) y = 6
INSUFFICIENT: We dont know x

Combining (1) & (2)
4^3 = 64 has 7 divisors or factors
6^2 = 36 has 9 divisors or factors

7 is NOT multiple of 9, hence this information SUFFICIENT to answer the question as NO

Hence choice(C) is the answer.
_________________

Manager

Joined: 14 Dec 2011

Posts: 52

Followers: 0

Kudos [?]: 2 [0], given: 34

Re: M02 Q18 Is the total number of divisors of x^3 a multiple [#permalink]

18 Jan 2013, 13:31

Thanks PraPon for your reply.

What if the following question was asked :- Are the divisors of x^3 a multiple of the divisors of y^2 ?

then i think answer must be E.

Looking forward to your replies.

Regards
Vinni

Senior Manager

Joined: 27 Jun 2012

Posts: 413

Followers: 23

Kudos [?]: 193 [0], given: 171

Re: M02 Q18 Is the total number of divisors of x^3 a multiple [#permalink]

18 Jan 2013, 15:26

vinnik wrote:

Your question "Are the divisors of x^3 a multiple of the divisors of y^2 ?" is ambiguous.

However If question asks "Is each divisor of x^3 a multiple of the divisors of y^2?" OR "Are all divisors of x^3 multiple of the divisors of y^2?", then still the information is SUFFICIENT" to answer the question as NO as you have atleast one fallout/exception case.
_________________

Re: M02 Q18 Is the total number of divisors of x^3 a multiple [#permalink] 18 Jan 2013, 15:26

		Similar topics	Author	Replies	Last post
Similar Topics:		What is the total number of different divisors including 1	krishrads	3	15 May 2005, 04:10
	1	Factoring...? (m02 #8)	Liquid	5	27 Feb 2008, 22:50
	2	Is the total number of divisors of x^3 a multiple of the	slingfox	21	21 Oct 2009, 14:40
		Is the total number of divisors of x^3 a multiple of the	amitgovin	6	06 Nov 2009, 09:27
		number of divisors for prime numbers	ksharma12	1	01 Jul 2010, 16:48

M02 Q18 Is the total number of divisors of x^3 a multiple

Moderator: Bunuel

Main navigation

GMAT Resources

Partners

MBA Resources

GMAT ® is a registered trademark of the Graduate Management Admission Council ® (GMAC ®). GMAT Club's website has not been reviewed or endorsed by GMAC.

GMAT Courses

Admissions Consulting

M02 Q18 Is the total number of divisors of x^3 a multiple

M02 Q18 Is the total number of divisors of x^3 a multiple

Main navigation

GMAT Resources

Partners

MBA Resources