GMAT Data Proficiency

Unlike the problem solving questions, Data Sufficiency questions do not require you to solve a problem. Rather, the data sufficiency questions require you to find whether the statements provide enough information to solve the question. Many test-takers have difficulty with the Data Sufficiency questions because they never encounter such questions before the GMAT. As a matter of fact, when you become familiar with these types of questions, you will find it easier to solve than the standard problem solving questions.

A sample GMAT Data Sufficiency questions look like this:

What is the value of ?

(1)

(2)

The five answer choices after the question do not give five optional values for you to choose. Instead, they ask for the sufficiency of the above statement.

Five answer choices:

(A) if statement (1) alone is sufficient to answer the question, but statement (2) alone is not;

(B) if statement (2) alone is sufficient to answer the question, but statement (1) alone is not;

(C) if statements (1) and (2) taken together are sufficient to answer the question, even though neither statement alone is sufficient;

(D) If either statement alone is sufficient to answer the question;

(E) If statements (1) and (2) taken together are not sufficient to answer the question.

Note:

1. Diagrams accompanying problems agree with information given in the questions, but may not agree with additional information given in statements (1) and (2).

2. All numbers used are real numbers.

Directions:

In each of the problems, a question is followed by two statements containing certain data. You are to determine whether the data provided by the statements are sufficient to answer the question. Choose the correct answer based up on the statement's data, your knowledge of mathematics, and your familiarity with everyday facts (such as number of minutes in an hour or cents in a dollar).

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