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a × c and b × d

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GMAT Club Legend
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
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a × c and b × d [#permalink] New post 30 Aug 2018, 16:38
Expert's post
00:00

Question Stats:

33% (00:18) correct 66% (01:07) wrong based on 9 sessions
Attachment:
Capture.PNG
Capture.PNG [ 25.08 KiB | Viewed 156 times ]


Quantity A
Quantity B
\(a \times c\)
\(b \times d\)


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Intern
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Joined: 28 Aug 2018
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GRE 1: Q160 V143
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Re: a × c and b × d [#permalink] New post 30 Aug 2018, 18:20
How can the Answe be B if the values of a,b,c,d is not provided. It should be D
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GMAT Club Legend
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User avatar
Joined: 07 Jun 2014
Posts: 4710
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1613 [0], given: 375

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Re: a × c and b × d [#permalink] New post 31 Aug 2018, 06:28
Expert's post
mathurmudit1003 wrote:
How can the Answe be B if the values of a,b,c,d is not provided. It should be D


Sorry abut that fixed it!
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Sandy
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Intern
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Re: a × c and b × d [#permalink] New post 31 Aug 2018, 21:20
Answer is D as the values of a,b,c,d are not specified .
Manager
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GRE 1: Q142 V146
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Kudos [?]: 77 [0], given: 99

Re: a × c and b × d [#permalink] New post 01 Sep 2018, 07:04
sandy wrote:
mathurmudit1003 wrote:
How can the Answe be B if the values of a,b,c,d is not provided. It should be D


Sorry abut that fixed it!



It has not been fixed and how is the answer D when all the numbers are right to the 0 and choice B is further to the right than choice A.
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Intern
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Joined: 28 Aug 2018
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GRE 1: Q160 V143
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Re: a × c and b × d [#permalink] New post 01 Sep 2018, 09:31
1
This post received
KUDOS
IshanGre wrote:
sandy wrote:
mathurmudit1003 wrote:
How can the Answe be B if the values of a,b,c,d is not provided. It should be D


Sorry abut that fixed it!



It has not been fixed and how is the answer D when all the numbers are right to the 0 and choice B is further to the right than choice A.


If you observe the image, a,b,c,d are all greater than zero

Now there is no specification about a,b,c,d being Integers or fraction but we have following information

0<a<b<c<d

we have to compare axc and bxd

Assuming axc = Z

Now we know that b is greater than a and d is greater than c

So any value of b will be greater than a and any value of d will be greater than c

So if axc = Z then bxd will always be greater than Z.

You can try doing this assuming values as well. but based on the above calculation, axc = Z < bxd

Hence the Answer is B

Hope it helps.

Regards,
Mudit
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Re: a × c and b × d   [#permalink] 01 Sep 2018, 09:31
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