Data Sufficiency problems make up about two-fifths of the quantitative questions on the GMAT. They are not direct questions which ask to give the answer to the question. They ask to determine whether or not one can answer the question with the information given.

A problem and two statements (1) and (2) are given in the question. All Data Sufficiency questions have following five choices:

- 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 statement ALONE is sufficient.
- D. EACH statement ALONE is sufficient.
- E. Statements (1) and (2) TOGETHER are NOT sufficient.

### How to Solve Data Sufficiency Problems

### Bonus Tips for Data Sufficiency Problems

1. In problem solving questions, the focus is to find the answers. However, in data sufficiency this is not the case. The focus here is whether you can find the answer or not?

2. You can memorize the answer choices. Though through practice this will be automatic process. There are five answer choices which are always same.

3. In Data Sufficiency, you have to first consider each statement separately. Only if both the statements alone are not sufficient, you should consider the sufficiency of the information in the combined statements.

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