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# M25-24

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Math Expert
Joined: 02 Sep 2009
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16 Sep 2014, 00:23
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Difficulty:

15% (low)

Question Stats:

69% (00:38) correct 31% (00:35) wrong based on 367 sessions

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What is the product of a certain pair of consecutive odd integers?

(1) Exactly one of the integers is negative.

(2) At least one of the integers is positive.

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Joined: 02 Sep 2009
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16 Sep 2014, 00:23
Official Solution:

Statement (1) by itself is sufficient. S1 tells that the mentioned pair is (1, -1). The product of these numbers is $$-1 * 1 = -1$$.

Statement (2) by itself is insufficient. Consider $$(1, -1)$$ and $$(1, 3)$$.

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14 Jan 2015, 17:57
Sorry to bother - but why is the number 0 ignored here?
Math Expert
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15 Jan 2015, 00:09
jamesbinford wrote:
Sorry to bother - but why is the number 0 ignored here?

0 is even, not odd.
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30 Oct 2015, 22:05
But can't I use (-3,3) as the consecutive odd integers. If yes then the answer would be 9 and then A will not be sufficient. please help.
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31 Oct 2015, 02:48
rhio wrote:
But can't I use (-3,3) as the consecutive odd integers. If yes then the answer would be 9 and then A will not be sufficient. please help.

Consecutive odd or even integers are those with common difference of 2. So, for example, -1 and 1 or 9 and 11. -3 and 3 are not consecutive odd integers.
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27 Aug 2016, 04:07
Bunuel is a patient genius!
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Joined: 05 Sep 2016
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11 Sep 2016, 06:15
so how does 1 and 3 satisfy statement 1 of a number being negative?

Bunuel wrote:
rhio wrote:
But can't I use (-3,3) as the consecutive odd integers. If yes then the answer would be 9 and then A will not be sufficient. please help.

Consecutive odd or even integers are those with common difference of 2. So, for example, -1 and 1 or 9 and 11. -3 and 3 are not consecutive odd integers.
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11 Sep 2016, 06:18
meesamalim wrote:
so how does 1 and 3 satisfy statement 1 of a number being negative?

Bunuel wrote:
rhio wrote:
But can't I use (-3,3) as the consecutive odd integers. If yes then the answer would be 9 and then A will not be sufficient. please help.

Consecutive odd or even integers are those with common difference of 2. So, for example, -1 and 1 or 9 and 11. -3 and 3 are not consecutive odd integers.

Where it's said that (1, 3) satisfy the first statement???
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11 Sep 2016, 07:16
Consecutive odd or even integers are those with common difference of 2. So, for example, -1 and 1 or 9 and 11. -3 and 3 are not consecutive odd integers.[/quote][/quote]

Where it's said that (1, 3) satisfy the first statement???[/quote]

so statement one you are saying is sufficient right? statement one says either one of the numbers are negative. hence why cannot 1,3 be used as consecutive integers which fails the statement?
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11 Sep 2016, 07:31
meesamalim wrote:

so statement one you are saying is sufficient right? statement one says either one of the numbers are negative. hence why cannot 1,3 be used as consecutive integers which fails the statement?

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30 Jun 2018, 03:11
1
Hi,

The way this question is worded is kind of confusing. When they are asking what is the product, I am assuming a certain numerical value is what needs to be solved for.
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30 Jun 2018, 09:22
bpdulog wrote:
Hi,

The way this question is worded is kind of confusing. When they are asking what is the product, I am assuming a certain numerical value is what needs to be solved for.

The question is fine. Yes, it's asks for a product, and (1) gives exact numerical answer: The product of these numbers is −1∗1=−1 .
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03 Aug 2018, 21:39
If I understand it correctly, this particular question is essentially asking for the value of the product, right?
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03 Aug 2018, 23:26
sayankh wrote:
If I understand it correctly, this particular question is essentially asking for the value of the product, right?

Yes, it's asks for a product, and (1) gives exact numerical answer: The product of these numbers is −1∗1=−1 .
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05 Aug 2018, 04:36
Bunuel wrote:
What is the product of a certain pair of consecutive odd integers?

(1) Exactly one of the integers is negative.

(2) At least one of the integers is positive.

Bunuel.

How can we assume only 2 numbers?

I mean we can have the series as -1, 1, 3, 5 etc as well.. and so by this logic, A would not be sufficient.

if we include zero in the terms, then we get a conclusive answer.. but Zero is not Odd.
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05 Aug 2018, 06:18
saurabh9gupta wrote:
Bunuel wrote:
What is the product of a certain pair of consecutive odd integers?

(1) Exactly one of the integers is negative.

(2) At least one of the integers is positive.

Bunuel.

How can we assume only 2 numbers?

I mean we can have the series as -1, 1, 3, 5 etc as well.. and so by this logic, A would not be sufficient.

if we include zero in the terms, then we get a conclusive answer.. but Zero is not Odd.

Pair of numbers = TWO numbers.
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05 Aug 2018, 11:03
Bunuel wrote:
saurabh9gupta wrote:
Bunuel wrote:
What is the product of a certain pair of consecutive odd integers?

(1) Exactly one of the integers is negative.

(2) At least one of the integers is positive.

Bunuel.

How can we assume only 2 numbers?

I mean we can have the series as -1, 1, 3, 5 etc as well.. and so by this logic, A would not be sufficient.

if we include zero in the terms, then we get a conclusive answer.. but Zero is not Odd.

Pair of numbers = TWO numbers.

yup got it.. silly mistakes like these cost a lot in the exam
Re: M25-24 &nbs [#permalink] 05 Aug 2018, 11:03
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# M25-24

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