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rxs0005
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Bumping for review and further discussion.
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GRE 1: Q169 V154
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Here the above equation can be reduced to is A-B <0
statement 1 is hence sufficient
but statement is not as we cannot tell whether A>B OR B>A
Hence A
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Is \(\frac{1}{(a - b)} < b - \)a ?

(1) \(a > b\)

If a > b then \(\frac{1}{(a - b)}\) will be positive.

\(\frac{1}{(a - b) } > 0\)

\(b - a < 0\)

The question can be rephrased as \(is positive value < negative value\)? We can answer with certainty: no.

Sufficient.

(2) \((a + b)(a – b) > 0\)

(a+b) and (a-b) are both either negative or positive. We can't determine which scenario, however.

We don't know if a < b or a > b. Insufficient.

Answer is A.
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Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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