Is the three-digit number n less than 550? 1) The product of

Oldest

Best Reply

Author

Message

TAGS:

Director

Joined: 17 Oct 2005

Posts: 949

Followers: 1

Kudos [?]: 6 [0], given: 0

Is the three-digit number n less than 550? 1) The product of [#permalink]

18 Dec 2005, 18:02

00:00

Question Stats:

0% (00:00) correct

0% (00:00) wrong

based on 0 sessions

Is the three-digit number n less than 550?

1) The product of the digits in n is 30

2) The sum of the digits in n is 10

Joined: 06 Jun 2004

Posts: 1068

Location: CA

Followers: 2

Kudos [?]: 12 [0], given: 0

Re: DS number properties [#permalink]

18 Dec 2005, 20:44

joemama142000 wrote:

Is the three-digit number n less than 550?

1) The product of the digits in n is 30

2) The sum of the digits in n is 10

Answer is C

(1) Could be 615 or 516, etc. Insufficient
(2) Could be 640 or 460, etc. Insufficient

(1) + (2) only possibilities are numbers that contain 5, 3, 2. 532, 235...etc.. All less than 550.
_________________

Don't be afraid to take a flying leap of faith.. If you risk nothing, than you gain nothing...

SVP

Joined: 24 Sep 2005

Posts: 1913

Followers: 6

Kudos [?]: 55 [0], given: 0

Re: DS number properties [#permalink]

18 Dec 2005, 21:06

TeHCM wrote:

joemama142000 wrote:

Is the three-digit number n less than 550?

1) The product of the digits in n is 30

2) The sum of the digits in n is 10

Answer is C

(1) Could be 615 or 516, etc. Insufficient
(2) Could be 640 or 460, etc. Insufficient

(1) + (2) only possibilities are numbers that contain 5, 3, 2. 532, 235...etc.. All less than 550.

Yes. C it is :wink:

from 1: the factors of 30 is 1,2,3,5,6,10,15,30 ..since the number must be digits ---> 10,15 and 50 don't need to be considered
+In case the hundreds digit of the 3-digit number is 1,2,3 ---> answer to the question is clearly YES.
+In case hundreds digit= 5 , the second digit can only be 1,2,3 coz if it's 6 ---> violate 2 ---> answer to the question is YES.
+In case hundreds digit= 6 --> the number must contain 5 to satisfy first statement ---> but then it violates statement 2 ----> there's no 3-digit number with the hundreds digit = 6 satisfying the 2 statements together

=> The number is always less than 550
---->suff

C it is.

Re: DS number properties [#permalink] 18 Dec 2005, 21:06

		Similar topics	Author	Replies	Last post
Similar Topics:	1	Is the three digit number n less than 550? (1) The product	nitinneha	9	04 Apr 2007, 17:03
	2	The product of all the prime numbers less than 20 is closest	gablaze23	9	02 Aug 2007, 08:07
		Is the three-digit number n less than 550? 1) The product of	done_gre_now_gmat	9	27 Sep 2007, 16:34
	3	Is the three-digit number n less than 550 ?	LM	8	06 May 2010, 12:31
	2	Is the three-digit number n less than 550?	Stiv	2	15 Jun 2012, 06:34

Is the three-digit number n less than 550? 1) The product of

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

Is the three-digit number n less than 550? 1) The product of

Is the three-digit number n less than 550? 1) The product of

Main navigation

GMAT Resources

Partners

MBA Resources