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# If x is an integer, is x > 0?

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Intern
Joined: 14 Jan 2014
Posts: 13
If x is an integer, is x > 0? [#permalink]

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13 Aug 2014, 04:07
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If x is an integer, is x > 0?

1. x has only one multiple
2. x has an infinite number of factors
[Reveal] Spoiler: OA
Manager
Joined: 18 Jul 2013
Posts: 69
Location: Italy
GMAT 1: 600 Q42 V31
GMAT 2: 700 Q48 V38
If x is an integer, is x > 0? [#permalink]

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15 Aug 2014, 04:35
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Vijayeta wrote:
If x is an integer, is x > 0?

1. x has only one multiple
2. x has an infinite number of factors

1) Every number different from 0 has a infinite number of multiple. Ex the mutiples of 2 are 2, 4, 6, 8 etc.
But 0 will only have one multiple : 0 itself.
For example : $$0*1 = 0$$, $$0*2=0$$, $$0*3=0.$$
So x=0. Sufficient.

2) Every integer has a finite number of factors. example : 2 has 2 and 1. 3 has 3 and 1. 4 has 4, 2 and 1. etc...
The only number with an infinite number of factors will be 0. example : $$0 = 1*2*3*4*5*(etc)*0$$
so x=0. Sufficient.

Intern
Joined: 15 Mar 2015
Posts: 8
If x is an integer, is x > 0? [#permalink]

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18 Apr 2015, 23:48
Vijayeta wrote:
If x is an integer, is x > 0?

1. x has only one multiple
2. x has an infinite number of factors

It is given that x>0, then why are we considering the condition of x=0 and answering?
That's true x=0 is the only possible solution but still it's against the given question. Or the question itself is flawed?
Intern
Joined: 20 Mar 2015
Posts: 6
Re: If x is an integer, is x > 0? [#permalink]

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20 Apr 2015, 07:33
gmathunk wrote:
Vijayeta wrote:
If x is an integer, is x > 0?

1. x has only one multiple
2. x has an infinite number of factors

It is given that x>0, then why are we considering the condition of x=0 and answering?
That's true x=0 is the only possible solution but still it's against the given question. Or the question itself is flawed?

Hello,

The only thing that the question says is X is an integer.It asks whether X > 0 .

Thanks
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Re: If x is an integer, is x > 0? [#permalink]

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20 Apr 2015, 18:12
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Hi gmathunk,

When dealing with DS questions, you have to pay careful attention to the information that you're given and the QUESTION that is asked. Organization and note-taking are key here. Your task is to determine whether a given Fact (when combined with any information that you were given from the prompt) is enough to definitively answer the given question or not.

Here, we're told that X is an INTEGER. The QUESTION asks if it is greater than 0. This is a YES/NO question.

Thus, while we know that X is a whole number, it could be a positive or negative integer and it could even be 0. By working with each of the two individual Facts, you can determine that X MUST be 0 in each case, so you CAN definitively answer the question (the answer is ALWAYS NO).

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Manager
Joined: 17 Aug 2015
Posts: 102
Re: If x is an integer, is x > 0? [#permalink]

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31 Jan 2016, 21:28
EMPOWERgmatRichC wrote:
Hi gmathunk,

When dealing with DS questions, you have to pay careful attention to the information that you're given and the QUESTION that is asked. Organization and note-taking are key here. Your task is to determine whether a given Fact (when combined with any information that you were given from the prompt) is enough to definitively answer the given question or not.

Here, we're told that X is an INTEGER. The QUESTION asks if it is greater than 0. This is a YES/NO question.

Thus, while we know that X is a whole number, it could be a positive or negative integer and it could even be 0. By working with each of the two individual Facts, you can determine that X MUST be 0 in each case, so you CAN definitively answer the question (the answer is ALWAYS NO).

GMAT assassins aren't born, they're made,
Rich

Hi, Thanks for your post. I want to study if it relevant to the solution that x is an integer. If it was not told, what difference does it cause to the solution? The first statement will still be sufficient. Let us consider a fraction 0.5 . Now we know that it has more than one multiple. The second statement will be insufficient because we now have zero and a value such as 1/2. 1/2 can have infinite factors. For example 1/2p is a factor of 1/2 for any p as long it is multiplied by p. Please let me know if I am in the right direction
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Re: If x is an integer, is x > 0? [#permalink]

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07 Mar 2017, 00:48
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Vijayeta wrote:
If x is an integer, is $$x > 0$$?

1. x has only one multiple
2. x has an infinite number of factors

Official solution from Veritas Prep.

Solution: D

The only integer that has exactly one multiple is 0; every other integer has an infinite number of multiples, so statement (1) is SUFFICIENT. Zero is also the only integer that has an infinite number of factors – zero divided by anything yields an integer result – so statement (2) is also SUFFICIENT. (If you were wondering about infinity itself as a possibility for statement (2), infinity isn’t an integer because it cannot be represented in terms of digits.) (D)
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Joined: 12 Nov 2016
Posts: 776
If x is an integer, is x > 0? [#permalink]

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25 Sep 2017, 22:33
Vijayeta wrote:
If x is an integer, is x > 0?

1. x has only one multiple
2. x has an infinite number of factors

Interesting question

Statement 1

X must be 0 because only 0 is the only integer that has one multiple

Statement 2

Only 0 can have an infinite number of factors
If x is an integer, is x > 0?   [#permalink] 25 Sep 2017, 22:33
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