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If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2

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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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New post 25 Sep 2018, 05:26
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A
B
C
D
E

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Question Stats:

73% (00:43) correct 27% (01:09) wrong based on 121 sessions

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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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New post 25 Sep 2018, 05:30
1
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.
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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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New post 25 Sep 2018, 10:03
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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If 2 < x < 6, what is the value of x? (1) 15 is a multiple of x. (2) 2  [#permalink]

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New post 25 Sep 2018, 10:09
Has it been mentioned anywhere that x is an integer?? I guess the correct answer should be E.

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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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New post 25 Sep 2018, 10:42
As x is not an integer, correct answer should be C
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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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New post 25 Sep 2018, 21:46
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!
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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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New post 25 Sep 2018, 22:45
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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New post 25 Sep 2018, 23:50
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.

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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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New post 07 Oct 2018, 09:55
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?

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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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New post 07 Oct 2018, 16:54
I think answer is E is as well. Condition “integer” isn’t mentioned anywhere.

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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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New post 07 Oct 2018, 21:19
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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.



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.
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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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New post 07 Oct 2018, 23:15
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?

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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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New post 07 Oct 2018, 23:19
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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?

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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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New post 07 Oct 2018, 23:26
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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?

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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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New post 08 Oct 2018, 02:16
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.

Answer choice B.

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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] 08 Oct 2018, 02:16
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