Tips and Tricks on Data Sufficiency


 


1
Always remember your aim is not to arrive at a answer (numerical or otherwise) but only ensure which of the given statements are sufficient to answer the question.



2
Evaluate statement 1 and question alone, statement 2 and question alone and then analyze the answer options in the following order
D If EACH statement ALONE is sufficient to answer the question
A or B If statement a/b ALONE is sufficient, but statement b/a alone is not sufficient to answer the question asked
C If BOTH the statements a and b TOGETHER are sufficient to answer the question asked but NEITHER statement ALONE is sufficient
E If statements a and b TOGETHER are NOT sufficient to answer the question asked and additional data specific to the problem are needed



   3
Substitute numbers in a algeraic expressions to arrive at an answer. This is useful if expressions are polynomials of degree higher than 2. Substitute simple values.


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