# Free Data Sufficiency GMAT Practice Questions with Solutions

Sample 1

A set of 10 questions similar to the GMAT data sufficiency questions , with detailed solutions are presented.
Given a problem and two statements numbered (1) and (2), The data sufficiency problems are answered as follows
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked. B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked. C. BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient to answer the question asked. D. EACH statement ALONE is sufficient to answer the question asked. E. Statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
## Question 1Find the length of the rectangle.(1) The perimeter of the rectangle is 120 (2) The width of the rectangle is 20 ## Question 2Given the followingx = 2 t - z + 5w, y = 2 t - 1, z = 2w + 1, find the value of x. (1) y = 3 (2) z = - 5 ## Question 3Find the area of an isosceles right triangle.(1) The length of one of its legs is 10 cm (2) The length of its hypotenuse is 10√2 ## Question 4Is x = y?(1) | x | = | y | (2) x y > 0 ## Question 5In a library there are 3 kinds of books: Maths, Biology and Geography. There are 150 more Geography than Maths books. How many books are there in the library?(1) The ratio of Maths to Biology books is 5:7 (2) The ratio of Biology to Geography books is 7:8 ## Question 6What is the value of x^{2} + y^{2}?
(1) x + y = 4 (2) x = 2 / y ## Question 7What is the value x?(1) 2x + 0.5 y = 7 (2) 0.4 x + 0.2 y = 1.4 ## Question 8What is the perimeter of the quadrilateral?(1) The area of the quadrilateral is 600 (2) One side of the quadrilateral is 30 ## Question 9m and n are both positive and m is less than n. What is the value of m^{2} - n^{2}?
(1) |m + n| = 14 (2) |m - n| = 2 ## Question 10What is the volume of the sphere?(1) The surface area of the sphere is 400 pi (2) The radius of the sphere is 10 ## More References and Links to Math Practice TestsFree Practice for GAMT Math testsFree Compass Math tests Practice Free Practice for SAT, ACT Math tests Free GRE Quantitative for Practice Free AP Calculus Questions (AB and BC) with Answers |