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

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Senior Manager
Joined: 10 Jul 2013
Posts: 314
The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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06 Aug 2013, 14:29
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Difficulty:

55% (hard)

Question Stats:

59% (01:40) correct 41% (01:26) wrong based on 206 sessions

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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 [ 14.46 KiB | Viewed 2845 times ]

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Asif vai.....

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

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06 Aug 2013, 22:16
1
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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Joined: 17 Mar 2014
Posts: 68
Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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24 Apr 2014, 02:13
1
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.
Math Expert
Joined: 02 Sep 2009
Posts: 52294
Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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24 Apr 2014, 02:30
3
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 [ 12.48 KiB | Viewed 2186 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.

Hope it's clear.
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Joined: 17 Mar 2014
Posts: 68
Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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24 Apr 2014, 03:07
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.

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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10 Mar 2016, 18:15
first time seeing a question with such notations. unless I see similar official question, I would rather disregard it...
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Joined: 09 Sep 2013
Posts: 9445
Re: The possible arguments of the functions f(x,y) and g(x,y)  [#permalink]

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10 Jun 2018, 02:11
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Re: The possible arguments of the functions f(x,y) and g(x,y) &nbs [#permalink] 10 Jun 2018, 02:11
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