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What is the product of v, w, and x?

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pierferraro
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What is the product of v, w, and x? [#permalink] New post  17 Dec 2014, 04:11
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What is the product of v, w, and x?

(1) The product of v and w is 0.
(2) x=5
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pierferraro
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Re: What is the product of v, w, and x? [#permalink] New post  17 Dec 2014, 04:14
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pierferraro wrote:
What is the product of v, w, and x?
(1) The product of v and w is 0.
(2) x=5


Statement 1 says that the product of v and w is 0, hence v or w (or both) = 0
Sufficient because if any of term in a multiplication equals 0 the product of the multiplication will be 0

Statement 2 says that x is 5
Insufficient because it does not say anything about v or w.
I would be sufficient if x=0

Answer A
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uday1409
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What is the product of v, w, and x? [#permalink] New post  17 Dec 2014, 07:03
1. It states that vw=0 ,
if x=infinity then we cannot determine the product value as it becomes 0*(1/0) so 0/0>>cant be determined. insufficient

2. x=5; but we dont know the values of v and w; insufficient


1+2>> Suffcient since x value is finite.

Hence Ans C ....


I am not sure how the OA is A because we never know what value x can take.
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Re: What is the product of v, w, and x? [#permalink] New post  17 Dec 2014, 07:05
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uday1409 wrote:
1. It states that vw=0 ,
if x=infinity then we cannot determine the product value as it becomes 0*(1/0) so 0/0>>cant be determined. insufficient

2. x=5; but we dont know the values of v and w; insufficient


1+2>> Suffcient since x value is finite.

Hence Ans C ....


I am not sure how the OA is A because we never know what value x can take.


Don't complicate things. Infinity is not a number.
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pierferraro
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Re: What is the product of v, w, and x? [#permalink] New post  17 Dec 2014, 07:09
uday1409 wrote:
1. It states that vw=0 ,
if x=infinity then we cannot determine the product value as it becomes 0*(1/0) so 0/0>>cant be determined. insufficient

2. x=5; but we dont know the values of v and w; insufficient


1+2>> Suffcient since x value is finite.

Hence Ans C ....


I am not sure how the OA is A because we never know what value x can take.


Infinity is not a number
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Joshuad25
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Re: What is the product of v, w, and x? [#permalink] New post  30 Sep 2016, 15:54
how can we determine if x is 8 or 10 or 10000?
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Bunuel
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Re: What is the product of v, w, and x? [#permalink] New post  01 Oct 2016, 02:50
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Joshuad25 wrote:
What is the product of v, w, and x?

(1) The product of v and w is 0.
(2) x=5


how can we determine if x is 8 or 10 or 10000?


It does not matter. Since from (1) v*w = 0, then v*w*x = 0*x = 0, regardless of the value of x.
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Re: What is the product of v, w, and x? [#permalink] New post  17 Mar 2022, 08:41
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