2005 April 25th, 11:52 PM
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#1 (permalink) |
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Within my grasp!
 Join Date: Nov 2004
Posts: 360
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OG question
Guys is 0 * 0 defined, if yes then what is the value of 0 * 0.
I am little confused because in Official Guide page number 36 it is given that if xy = 0, then either x = 0 or y = 0.
_ _ _ _ SIG _ _ _ _
If it's simple it wont appear on GMAT 
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2005 April 26th, 10:04 PM
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#2 (permalink) |
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TestMagic Guru-in-Training
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Join Date: Jan 2005
Location: United States
Posts: 537
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Re: OG question
I am not sure what the confusion is. It says if xy=0 then either x=0 OR y=0 ( OR is important)
One of the numbers can be anything. But if the product of the two is zero, then the other is zero. |
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2005 April 27th, 04:52 AM
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#4 (permalink) |
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I JUST got here.
 Join Date: Mar 2005
Posts: 26
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Re: OG question
hi,
if either x or y = 0, it means that both x and y cannot be 0. however, 0 * 0 also remains 0, that doesn't change at all. if we were to look into the logic then naturally, only one of them can be zero, while the other variable takes another value. |
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