A Sure Way to Beat GMAT Data Sufficiency Problems - Videos

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Brian Galvin, Veritas Prep’s Director of Academic Programs, shows how to work with “Yes / No”-type Data Sufficiency questions on the GMAT.

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7 COMMENTS

  1. @Neil Jason —  If you find one no, it does not make it sufficient. You have to prove that it is a 'no' in all cases for it to be sufficient. Or, you have to prove that it is 'yes' in all cases for it to be sufficient. If you are able to see that it is only "sometimes sufficient" it is insufficient,naturally.

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