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The possible arguments of the functions f(x,y) and g(x,y)

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The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 06 Aug 2013, 15:29
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The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1 and y = 0 or 1 and are defined by the following tables (Attachment) :

What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0
(2) g(a,b)= 0

Attachments

File comment: Attachment
function 23.png
function 23.png [ 14.46 KiB | Viewed 2670 times ]


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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 06 Aug 2013, 23:16
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What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0
This could be \(a,b=0\) and \(f(a,b) + g(a,b)=0\); or could be \(a=0\) and \(b=1\) and \(f(a,b) + g(a,b)=1\).
Not sufficient

(2) g(a,b)= 0
This works only for \(a,b=0\) so \(f(a,b) + g(a,b)=0\).
Sufficient
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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 24 Apr 2014, 03:13
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Asifpirlo wrote:
The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1 and y = 0 or 1 and are defined by the following tables (Attachment) :

What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0
(2) g(a,b)= 0



Can some one please explain the table to me . As of now I am not able to comprehend the two tables of f(a,b ) and g(a, b).
in a 2*2 table , rows stand for something and column stand for something. In this sum what does row stand for and what does column stand for?

Thank you members.
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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 24 Apr 2014, 03:30
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qlx wrote:
Asifpirlo wrote:
The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1 and y = 0 or 1 and are defined by the following tables (Attachment) :

What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0
(2) g(a,b)= 0



Can some one please explain the table to me . As of now I am not able to comprehend the two tables of f(a,b ) and g(a, b).
in a 2*2 table , rows stand for something and column stand for something. In this sum what does row stand for and what does column stand for?

Thank you members.


Attachment:
Untitled.png
Untitled.png [ 12.48 KiB | Viewed 2013 times ]
Yellow rows are the values of x, green columns are the values of y, and the red boxes are the outcomes of the functions f and g.

The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1 and y = 0 or 1 and are defined by the following tables:

What is the value of f(a,b) + g(a,b) ?


(1) f(a,b) = 0. According to the second table we can have the following cases:
a=0, b=0 --> f(a,b) + g(a,b) = 0 + 0 = 0;
a=1, b=0 --> f(a,b) + g(a,b) = 0 + 1 = 1;
a=0, b=1 --> f(a,b) + g(a,b) = 0 + 1 = 1.

Not sufficient.


(2) g(a,b) = 0. According to the first table we can have only the following case:
a=0, b=0 --> f(a,b) + g(a,b) = 0 + 0 = 0.

Sufficient.

Answer: B.

Hope it's clear.
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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 24 Apr 2014, 04:07
Bunuel wrote:
qlx wrote:
Asifpirlo wrote:
The possible arguments of the functions f(x,y) and g(x,y) are x=0 or 1 and y = 0 or 1 and are defined by the following tables (Attachment) :

What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0
(2) g(a,b)= 0



Can some one please explain the table to me . As of now I am not able to comprehend the two tables of f(a,b ) and g(a, b).
in a 2*2 table , rows stand for something and column stand for something. In this sum what does row stand for and what does column stand for?

Thank you members.


Attachment:
Untitled.png
Yellow rows are the values of x, green columns are the values of y, and the red boxes are the outcomes of the functions f and g.

What is the value of f(a,b) + g(a,b) ?

(1) f(a,b) = 0. According to the second table we can have the following cases:
a=0, b=0 --> f(a,b) + g(a,b) = 0 + 0 = 0;
a=1, b=0 --> f(a,b) + g(a,b) = 0 + 1 = 1;
a=0, b=1 --> f(a,b) + g(a,b) = 0 + 1 = 1.

Not sufficient.


(2) g(a,b) = 0. According to the first table we can have only the following case:
a=0, b=0 --> f(a,b) + g(a,b) = 0 + 0 = 0.

Sufficient.

Answer: B.

Hope it's clear.


Great that clears it! I guess a real GMAT question could have mentioned horizontal row is x and vertical column is y.
Thank you.
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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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New post 10 Mar 2016, 19:15
first time seeing a question with such notations. unless I see similar official question, I would rather disregard it...
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Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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Re: The possible arguments of the functions f(x,y) and g(x,y) &nbs [#permalink] 10 Jun 2018, 03:11
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