Data Sufficiency

You are not required to do the calculation, you just have to check whether with the help of given data you can find the answer or not. Data sufficiency has many types of questions.

Data Sufficiency Directions

1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
3. BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked.
4. EACH statement ALONE is sufficient to answer the question asked.
5. Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.

Numbers

All numbers used are real numbers.

Figures

A figure accompanying a data sufficiency question will conform to the information given in the question but will not necessarily conform to the additional information given in statements (1) and (2).

• Lines shown as straight can be assumed to be straight and lines that appear jagged can also be assumed to be straight.
• You may assume that the positions of points, angles, regions, etc. exist in the order shown and that angle measures are greater than zero.
• All figures lie in a plane unless otherwise indicated.

• Note

  In data sufficiency problems that ask for the value of a quantity, the data given in the statement are sufficient only when it is possible to determine exactly one numerical value for the quantity.

How to approach data sufficiency questions

• learn the answer choices before doing practice questions
• read the question and make any deductions from the data
• think about what you need to solve the question
• consider the statements one at a time
• do not actually solve the problem