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Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.  If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2

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Math Expert V
Joined: 02 Sep 2009
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If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

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VP  D
Joined: 31 Oct 2013
Posts: 1467
Concentration: Accounting, Finance
GPA: 3.68
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Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Range of x is given.

x = 3 or 4 or 5.

Statement 1: 15 is a multiple of 15. x could be 3 or 5. NOT sufficient.

Statement 2; 21 is a multiple of x. only 3 is appropriate in this case. Sufficient.

The best answer is B.
Manager  G
Joined: 01 Feb 2018
Posts: 96
Location: India
GMAT 1: 700 Q47 V38 WE: Consulting (Consulting)
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

IMO answer should be B.
Since we are given a range 2 < x < 6, we can check for the values which satisfy the statements and proceed.

Statement 1: x can be 3 or 5. Not sufficient.

Statement 2: x can only be 3. Sufficient.
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Intern  B
Joined: 17 Aug 2018
Posts: 19
If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Has it been mentioned anywhere that x is an integer?? I guess the correct answer should be E.

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Intern  B
Joined: 04 Aug 2018
Posts: 4
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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As x is not an integer, correct answer should be C
Manager  G
Joined: 02 Aug 2015
Posts: 153
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Could someone please explain how can B be the answer? It's not mentioned anywhere that x is an integer.

Cheers!
Manager  G
Joined: 01 Feb 2018
Posts: 96
Location: India
GMAT 1: 700 Q47 V38 WE: Consulting (Consulting)
If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Diwakar003 wrote:
Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Could someone please explain how can B be the answer? It's not mentioned anywhere that x is an integer.

Cheers!

pankajpatwari Diwakar003
We are told 21 is a multiple of x, in the range 2 < x < 6, only 3 satisfies the condition.
Hope that's clear. _________________
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Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Sreyoshi007 wrote:
We are told 21 is a multiple of x, in the range 2 < x < 6, only 3 satisfies the condition.
Hope that's clear. Hi Sreyosi,

Thanks for your quick reply. Yes, we are told 21 is a multiple of x but not an integral multiple of x. Do both multiple and integral multiple mean the same? If yes, then the answer could very well be B.

Cheers!
Manager  G
Joined: 01 Jan 2018
Posts: 154
If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Sreyoshi007 wrote:
Diwakar003 wrote:
Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Could someone please explain how can B be the answer? It's not mentioned anywhere that x is an integer.

Cheers!

pankajpatwari Diwakar003
We are told 21 is a multiple of x, in the range 2 < x < 6, only 3 satisfies the condition.
Hope that's clear. Hi Sreyoshi007
It is nowhere mentioned that X is an integer. Then dont you think that answer should be E?

Regards,
Tamal
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Intern  B
Joined: 06 Aug 2018
Posts: 3
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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I think answer is E is as well. Condition “integer” isn’t mentioned anywhere.

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Retired Moderator P
Joined: 22 Aug 2013
Posts: 1428
Location: India
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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2
Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Quite a few people are confused that answer should be E because its not mentioned that 'x' is an integer.

But the thing is, that when we talk about factors/multiples, then both factor and multiple being talked about have to be integers only, otherwise the words 'factors' and 'multiples' will not make sense.

Eg, if we say that x is a factor of 15, then we have to assume that x is a positive integer and a factor of 15, so x can only be 1 or 3 or 5 or 15.
Similarly if we say that Y is a multiple of 15, then Y has to be an integer which is a multiple of 15, eg, Y can be 15*4 (60) or 15*15 (225) or 15*578 and so on.. But Y cannot be 15*-2 (-30) and Y also cannot be 15*2.5 etc.
Current Student S
Joined: 04 Jun 2018
Posts: 156
GMAT 1: 610 Q48 V25 GMAT 2: 690 Q50 V32 GMAT 3: 710 Q50 V36 Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Can someone please explain whether we will always assume x to be a integer when it is given that x is a multiple?

chetan2u
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Location: India
Concentration: International Business, General Management
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WE: Business Development (Energy and Utilities)
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Hi
Yes if X is given to be a multiple, it is an integer.

Multiple is defined for integer only.

"A multiple of a number is that number multiplied by an integer."

nitesh50 wrote:
Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Can someone please explain whether we will always assume x to be a integer when it is given that x is a multiple?

chetan2u
gmatbusters
daagh

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Math Expert V
Joined: 02 Aug 2009
Posts: 8003
Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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1
nitesh50 wrote:
Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

Can someone please explain whether we will always assume x to be a integer when it is given that x is a multiple?

chetan2u
gmatbusters
daagh

Yes, whenever we talk of a multiple or a factor, we talk of an integer..

5 will not be a multiple of 2.5..
Mutiple means integers that come in a multiplication table
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Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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Bunuel wrote:
If 2 < x < 6, what is the value of x?

(1) 15 is a multiple of x.
(2) 21 is a multiple of x.

1) 15=A* x

c could be 3 or 5 insufficient. If A is 5 then x is 3. If A is 3 then x is 5.

2) 21 = B*x

x can be 3 or 7, since it cannot be 7 then it is 3.

Sufficient.

Posted from my mobile device Re: If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2   [#permalink] 08 Oct 2018, 02:16
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