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Number properties

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Source: — Data Sufficiency |
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by rhymes_with_luck » Fri Aug 22, 2008 6:56 am
Can you please provide source of this q?

aba=a

let a != 0

then ab= 1

but if a=0

then ab =0

same for stmt 2

combine and put non zero/zero value same discrepancy will come.
So, E
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by vish150783 » Fri Aug 22, 2008 7:04 am
If we assume A and B not equal to zero then either statement is valid. But if this assumption is not provided in the question. The answer is E.

My answer is E.
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by mttorii » Fri Aug 22, 2008 9:24 am
This question is from a non official material.
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by mttorii » Fri Aug 22, 2008 10:00 am
This question is from a non official material.
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by aj5105 » Fri May 08, 2009 9:09 am
(1) can be 1,1 or -1,-1

(2) same case

(1) + (2)

Can be 1,1 or -1,-1.

(E)
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