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Joined: 09 Oct 2010
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Re: m05#06 [#permalink] New post 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
Joined: 20 Apr 2010
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Re: m05#06 [#permalink] New post 23 Nov 2010, 09:54
holy I didn't consider zero as an integer ...:(

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."
- Bernard Edmonds

A person who is afraid of Failure can never succeed -- Amneet Padda

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Re: m05#06 [#permalink] New post 09 Dec 2010, 14:51
This post received
scorcho wrote:
What is the product of 6 consecutive integers?

1. The greatest integer is 4
2. The sequence has both positive and negative integers

[Reveal] Spoiler: OA

Source: GMAT Club Tests - hardest GMAT questions

The explanation for S1 indicates that all integers are knowable (The greatest integer is 4).

S2 indicates that "the sequence has both positive and negative integers" therefore zero is included and the product will be zero.

Nothing is incorrect with the explanation, but S1 would also be sufficient by dint of zero also being included in the sequence. Or at least that's what I take consecutive to mean.

I only mention this because it's another way to prosecute S1, although I admit knowing I could crank out the product concretely was the first reason I discounted S1.

Be wary when consecutive integers cross 0.

Statement 1) says 4 is the greatest integer so the sequence will look like this
-1,0,1,2,3,4 (the product of these consecutive numbers is 0) SUFFICIENT

Statement 2) If the consecutive numbers have positive and negative numbers then it MUST cross 0. This will also yield 0 all the time. SUFFICIENT
ex: -1,0,1,2,3,4
ex 2: -2,-1,0,1,2,3

D is the answer.

I'm trying to not just answer the problem but to explain how I came up with my answer. If I am incorrect or you have a better method please PM me your thoughts. Thanks!

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Re: m05#06 [#permalink] New post 12 Dec 2010, 18:34
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As 0 will be included in both the options...

Kudos if any of my post helps you !!!

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Re: m05#06 [#permalink] New post 16 Nov 2011, 05:49
Ahhh crud. I read s2 incorrectly and assumed they HAD to be positive or negative - got rid of zero. :oops:
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Re: m05#06 [#permalink] New post 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.

Rajeev Nambyar
Chennai, India.

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

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