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Source: — Data Sufficiency |

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by Rahul@gurome » Sun Sep 05, 2010 6:34 pm
(1) is obviously NOT SUFFICIENT.
(2) is also NOT SUFFICIENT.

Combining (1) and (2) we have a > 0 or a is positive. But we cannot say anything about b.
If b = positive then x = negative
If b = negative then x = positive
If b = 0 then x = 0
So, nothing can be said about x.

The correct answer is [spoiler](E)[/spoiler].
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