Have 2 questions -
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What is the meaning of hammer time in verbal videos? Does it mean a contrast or main idea?
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https://www.reddit.com/r/GRE/comments/1csb3ix/309_to_324_in_35_days_viva_la_gregmat/
As per above link, is it safe to not answer(skip) questions. Doesnt skipping questions hurt the final score like GMAT?