How to Solve the Most Challenging GMAT Data Sufficiency Questions
Data Sufficiency questions play avery critical role in scoring well on the Quantitative section of GMAT.Each Data Sufficiency problem consists of a question, often accompanied with some information, and two statements giving additional information.
Your job is to work out whether you can answer the question using the given information. Please note that you need not solve the problem right down to the answer.
