Defining the margins of problems

## GMAT DATA SUFFICIENCY

GMAT Data Sufficiency is a very unique question type among GMAT questions and test prep in overall. Unlike a typical problem where you have to directly answer a question, a data sufficiency problem requires that you determine whether a question can be conclusively answered by analyzing two pieces of evidence, or statements,

**that are 100% true**(re-read the underlined to save yourself a lot of time in the next weeks and months as you prepare), first separately, then combined.**Consider the example below**

## Data Sufficiency sample problem

**Is the positive integer x even? **

(1) When you divide the integer x by 4, the remainder is not 0.

(2) When you divide the integer x by 2, the remainder is not 0.

A – STATEMENT (1) ALONE is sufficient, but STATEMENT (2) alone is not sufficient.

B – STATEMENT (2) ALONE is sufficient, but STATEMENT (1) alone is not sufficient.

C – BOTH STATEMENTS TOGETHER are sufficient, but NEITHER ALONE is sufficient.

D – EACH STATEMENT ALONE is sufficient.

E – NEITHER STATEMENT ALONE NOR TOGETHER are sufficient.