GMAT NUMBER SYSTEM & DATA SUFFICIENCY (Practice Questions Part 1)

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GMAT NUMBER SYSTEM & DATA SUFFICIENCY (Practice Questions Part 1)
Tips :- Analyze each statement individually, Use elimination, If you are certain you will get a unique value as the answer you need not solve till the end, In a multiple scenario problem be sure to compute each scenario all the way through to determine whether the end result for each scenario is actually different.