Brian Galvin, Veritas Prep's Director of Academic Programs, covers a very tricky Data Sufficiency question that requires a strong Data Sufficiency strategy, rather than deep knowledge of Geometry, to get the correct answer. Be sure to practice these types of problems sums as they seem tricky but once you crack the trick it s very simple to get the right answer to them. Answering these questions correctly is just gonna shine in your GMAT results.
Source: GMAT prep
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