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goyalsau: Legendary Member; Posts: 866; Joined: Mon Aug 02, 2010 6:46 pm; Location: Gwalior, India; Thanked: 31 times

by goyalsau » Fri Oct 08, 2010 4:23 am

Is 300 a factor of Q?

(1) 250 is a multiple of Q.

(2) 250 is a factor of Q

Saurabh Goyal
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Source: Beat The GMAT — Data Sufficiency | Fri Oct 08, 2010 4:23 am

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Rahul@gurome: GMAT Instructor; Posts: 1179; Joined: Sun Apr 11, 2010 9:07 pmFollowed by: 88 members; Location: Milpitas, CA; Thanked: 447 times

by Rahul@gurome » Fri Oct 08, 2010 4:49 am

(1) 250 is a multiple of 5, 10, 25, 50, 125. So, clearly 300 cannot be a factor of any of these values of Q.
Hence, (1) is SUFFICIENT.

(2) 250 is a factor of 250, 500, 750, 250*300 and so on.
Again we see that 300 may or may not be a factor of any values of Q.
Hence, (2) is NOT SUFFICIENT.

[spoiler]The correct answer is (A).[/spoiler]

Last edited by Rahul@gurome on Fri Oct 08, 2010 5:58 am, edited 1 time in total.

Rahul Lakhani
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deepak123gmat: Senior | Next Rank: 100 Posts; Posts: 30; Joined: Wed Oct 06, 2010 11:33 pm

by deepak123gmat » Fri Oct 08, 2010 5:39 am

I think answer is A.

2) 250 is a factor of 250, 500, 750 and so on and 300 is not.
but 250 and 300 are factors of (250*300), (2*250*300) and so on

so, 2) is not sufficient.

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goyalsau: Legendary Member; Posts: 866; Joined: Mon Aug 02, 2010 6:46 pm; Location: Gwalior, India; Thanked: 31 times

by goyalsau » Fri Oct 08, 2010 5:44 am

deepak123gmat wrote:I think answer is A.

2) 250 is a factor of 250, 500, 750 and so on and 300 is not.
but 250 and 300 are factors of (250*300), (2*250*300) and so on

so, 2) is not sufficient.

OA is A

Saurabh Goyal
[email protected]
-------------------------

EveryBody Wants to Win But Nobody wants to prepare for Win.

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Rahul@gurome: GMAT Instructor; Posts: 1179; Joined: Sun Apr 11, 2010 9:07 pmFollowed by: 88 members; Location: Milpitas, CA; Thanked: 447 times

by Rahul@gurome » Fri Oct 08, 2010 5:56 am

deepak123gmat wrote:I think answer is A.

2) 250 is a factor of 250, 500, 750 and so on and 300 is not.
but 250 and 300 are factors of (250*300), (2*250*300) and so on

so, 2) is not sufficient.

Agree with (A).

Rahul Lakhani
Quant Expert
Gurome, Inc.
https://www.GuroMe.com
On MBA sabbatical (at ISB) for 2011-12 - will stay active as time permits
1-800-566-4043 (USA)
+91-99201 32411 (India)

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