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Bunuel
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AdarshSambare
Hi Bunuel
I am getting two different efficiencies from the two statements.
Is that valid in GMAT?

No. ­In the GMAT, the two data sufficiency statements always provide true information and never contradict each other or the question stem. If the statements contradict one another, the question is flawed by GMAT standards. So, we cannot have say x = 12 from (1) and x= 6 from (2). So, this question is flawed.

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