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# m05#06

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Math Expert
Joined: 02 Sep 2009
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13 Nov 2010, 11:16
iamharish wrote:
statement 2 only says 'The sequence has both positive and negative integers' n doesnt speak where it starts n ends. eg {1,2,3,4,5,6} can also be valid
IMO A

First of all your example is not valid as {1, 2, 3, 4, 5, 6} doesn't have both positive and negative integers.

Next, if a sequence of consecutive integers has both positive and negative numbers in it then it must also contain zero, so the product of the terms of such sequence is always zero --> statement 2 is sufficient too.

OA for this question is D.
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Intern
Joined: 14 Sep 2010
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Kudos [?]: 1 [0], given: 6

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13 Nov 2010, 20:23
yes yes...i'm sry. somehw missed it. thanx Bunuel

Bunuel wrote:
iamharish wrote:
statement 2 only says 'The sequence has both positive and negative integers' n doesnt speak where it starts n ends. eg {1,2,3,4,5,6} can also be valid
IMO A

First of all your example is not valid as {1, 2, 3, 4, 5, 6} doesn't have both positive and negative integers.

Next, if a sequence of consecutive integers has both positive and negative numbers in it then it must also contain zero, so the product of the terms of such sequence is always zero --> statement 2 is sufficient too.

OA for this question is D.
Intern
Joined: 09 Oct 2010
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Kudos [?]: 0 [0], given: 0

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14 Nov 2010, 05:27
Always D.
Missed S2 and went for A initially.

S1 - (-1,0,1,2,3,4): Result - 0 Suff
S2 - Has to contain 0. Suff
Senior Manager
Joined: 20 Apr 2010
Posts: 250
WE 1: 4.6 years Exp IT prof
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Kudos [?]: 25 [0], given: 51

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23 Nov 2010, 09:54
holy I didn't consider zero as an integer ...
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I will give a Fight till the End

"To dream anything that you want to dream, that is the beauty of the human mind. To do anything that you want to do, that is the strength of the human will. To trust yourself, to test your limits, that is the courage to succeed."
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A person who is afraid of Failure can never succeed -- Amneet Padda

Don't Forget to give the KUDOS

Intern
Joined: 29 Aug 2011
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16 Nov 2011, 05:49
Ahhh crud. I read s2 incorrectly and assumed they HAD to be positive or negative - got rid of zero.
Intern
Status: Preparing for GMAT
Joined: 19 Sep 2012
Posts: 19
Location: India
GMAT Date: 01-31-2013
WE: Information Technology (Computer Software)
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Kudos [?]: 10 [0], given: 8

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16 Nov 2012, 05:38
From S1: we can conclude : {-2 -1 0 2 3 4} So Ans =0
From S2 : We can conclude: {-4,-3,-2,-1,0,1}, {-3,-2,-1,0,1,2}, {-2,-1,0,1,2,3}, {-1,0,1,2,3,4}
So any set Ans =0
So S1 and S2 could individually solve the answer so answer option is E.
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Rajeev Nambyar
Chennai, India.

Re: m05#06   [#permalink] 16 Nov 2012, 05:38

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# m05#06

Moderator: Bunuel

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