GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

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16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

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Bunuel

01 Jan 2026, 05:45

857

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188,843

by: bumpbot

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,468

by: bb

29 Aug 2025, 13:27

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If x, y and z are integers, is x – y greater than y – z?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

27 Jan 2017, 09:37

4

9

3,482

by: RahulJain293

05 Jan 2023, 09:35

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If X is a real number, is -3<X<3? (1) Least integer which is greater

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

amanvermagmat

07 Jun 2018, 05:20

16

7

3,481

by: Bunuel

20 Jun 2024, 05:32

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Can positive integer n be express as the difference of two prime numbe

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

05 Feb 2021, 09:00

2

3,481

by: HoneyLemon

06 Feb 2021, 02:39

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Jonathan would like to visit one of the 12 gyms in his area. If he

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

18 Apr 2023, 01:30

4

3

3,480

by: Nikkz99

13 Aug 2025, 03:29

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If both j and k are nonzero numbers, what is the value of j ?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

gmatser1

14 Nov 2015, 19:12

15

9

3,480

by: bumpbot

27 Dec 2022, 07:51

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30%~35% of the employees in a certain company have cell phones. Do at

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BillyZ

23 Feb 2017, 17:51

8

5

3,480

by: mikemcgarry

27 Feb 2017, 12:20

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A room contains exactly N people, out of which exactly half are men

505-555 (Easy) | Combinations

505-555 (Easy) | Combinations hide tags

amanvermagmat

20 Nov 2018, 11:08

9

2

3,479

by: bumpbot

18 Jun 2025, 12:08

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Is |a−b| < |a| + |b| ?

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

DHAR

03 Aug 2017, 09:21

13

7

3,479

by: bumpbot

17 Jan 2024, 05:56

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What is the value of a + b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

01 Jul 2016, 04:19

4

7

3,479

by: bumpbot

09 Jan 2021, 09:09

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If 3x + 2y = -2z, what is x? (1) x – y – z = 10 (2) x + y + z = -2

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

22 Jun 2017, 23:48

3

4

3,479

by: Nikkb

01 Oct 2017, 06:01

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The cost of a taxi fare consists of an initial fee of $3 plus an addit

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

01 Dec 2021, 07:30

7

4

3,478

by: bumpbot

08 Mar 2026, 05:12

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What is the median score of the class?

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

Bunuel

31 Jan 2017, 11:27

6

2

3,478

by: bumpbot

23 Aug 2025, 08:40

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Is |x| > x ? (1) x > |y| (2) x is a non-negative integer

655-705 (Hard) | Absolute Values, Inequalities

655-705 (Hard) | Absolute Values, Inequalities hide tags

chetan2u

21 Feb 2017, 07:54

8

7

3,477

by: bumpbot

18 Sep 2025, 04:36

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Is AB || CD? (1) AC = BD (2) AB = CD

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

BrentGMATPrepNow

18 Jun 2018, 08:12

10

3

3,477

by: bumpbot

11 Apr 2024, 06:13

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In the xy-plane, if line l has negative slope and passes through the

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

Bunuel

25 May 2018, 01:13

9

4

3,477

by: bumpbot

05 Oct 2021, 08:26

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After winning 30 percent of the first 50 games it played, team A won

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

29 Jul 2024, 01:30

12

6

3,476

by: HowCanIDoThis

17 Nov 2025, 02:50

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If k=x/(5^2z^b), where x is a positive integer, and k is expressed as

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

28 Apr 2016, 01:11

21

4

3,476

by: timmyq

25 Jun 2025, 18:51

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In the coordinate plane, a triangle ABC has 3 points A(-1,0), B(1,0),

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

MathRevolution

19 Oct 2017, 00:05

7

6

3,476

by: bumpbot

25 Jan 2024, 09:43

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A finite sequence {An} is arithmetic. If each term An of the sequence

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

MathRevolution

07 May 2018, 02:23

2

7

3,475

by: dhruvshawarma

17 Jun 2024, 06:39

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What is the value of prime number p?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

TheUltimateWinner

13 Sep 2020, 08:25

6

8

3,475

by: bumpbot

07 Jan 2024, 20:49

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Let T(n) represent the number of prime numbers less than n. What is th

655-705 (Hard) | Functions and Custom Characters, Number Properties

655-705 (Hard) | Functions and Custom Characters, Number Properties hide tags

Bunuel

03 Dec 2019, 01:28

11

10

3,473

by: bumpbot

03 Jul 2024, 00:40

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The population of city n is 100,000 greater than the population of cit

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

Bunuel

24 Jan 2021, 01:05

4

2

3,473

by: stne

05 Jan 2024, 13:57

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What is the greatest common divisor of positive integers x and y? (1)

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

unraveled

03 Jan 2020, 01:36

7

6

3,473

by: bumpbot

12 Dec 2022, 05:12

ER

If a, b, and c are positive, is a + b > c? (1) a/c > b > 1 (2) ab > ac

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

17 Jun 2018, 04:40

8

11

3,473

by: LeoN88

26 Jun 2019, 22:40

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If Carl is 3 times as old as Bea, how old is Bea? (1) In nine years,

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

25 Jul 2018, 05:18

1

4

3,472

by: sudarshan22

25 Jul 2018, 11:14

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is (a-b)/c >0? 1. a>b, b<c 2. a<b, b<c

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Creeper300

07 Nov 2010, 13:44

3

2

3,472

by: metallicafan

03 Feb 2012, 11:39

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If a#b, what is the value of a+b?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

ashiima

08 May 2015, 09:23

2

3,471

by: bumpbot

13 Jun 2024, 20:39

ER

If k is a positive integer, is k an integer?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

gmatser1

23 Jun 2015, 01:01

11

7

3,471

by: MHIKER

22 Sep 2020, 09:40

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Is a positive?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

09 Mar 2016, 12:51

3

3,471

by: Mo2men

30 Mar 2017, 04:56

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If ab ≠ 0; is a/b > 0 ? (1) |a*b| = a*b (2) |a| + |b| = |a + b |

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

contactakanksha

03 Mar 2020, 05:37

10

5

3,470

by: Bunuel

14 Aug 2025, 06:41

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If a, b, and c are positive numbers, is a < b < c?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Smita04

13 Apr 2012, 22:21

1

3

3,470

by: MathRevolution

26 Nov 2017, 11:25

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How much cardboard will it take to make an open cubical box with no to

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

29 Oct 2017, 01:51

2

3

3,470

by: saicharan1191

03 Nov 2017, 05:55

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Is mn < 0?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

18 Apr 2016, 01:00

1

3

3,469

by: bumpbot

07 Sep 2021, 09:57

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If x ≠ 0 and x^y = 1 what is the value of x?

555-605 (Medium) | Exponents, Number Properties

555-605 (Medium) | Exponents, Number Properties hide tags

Bunuel

08 Sep 2019, 21:52

3

6

3,469

by: djmobley

30 Sep 2019, 19:20

ER

Let x and y be two distinct digits in the decimal x.yx, what is x?

655-705 (Hard) | Fractions and Ratios, Number Properties

655-705 (Hard) | Fractions and Ratios, Number Properties hide tags

Bunuel

15 Jan 2017, 09:19

18

3

3,467

by: bumpbot

01 Feb 2025, 09:35

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If x and y are positive integers, is y – 2x positive?

655-705 (Hard) | Inequalities, Multiples and Factors

655-705 (Hard) | Inequalities, Multiples and Factors hide tags

Bunuel

06 Dec 2019, 05:58

4

2

3,467

by: TestPrepUnlimited

06 Jul 2021, 11:57

ER

If A = 1200, what is the unique value of B? (1) The difference betwee

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kawal27

01 Sep 2020, 11:14

1

2

3,467

by: IanStewart

02 Sep 2020, 07:36

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The difference between integers a and b is 7, and a > b. What is a?

805+ (Hard) | Algebra +2 tags

805+ (Hard) | Algebra, Exponents, Inequalities hide tags

Bunuel

26 Nov 2019, 02:05

11

4

3,466

by: bumpbot

21 Jun 2024, 01:29

P, Q, R receive fixed salary in a company. Salary of Q is what percent

Sub 505 (Easy) | Arithmetic, Percent and Interest Problems

Sub 505 (Easy) | Arithmetic, Percent and Interest Problems hide tags

amanvermagmat

06 Apr 2018, 05:30

9

2

3,465

by: bumpbot

02 Oct 2023, 03:56

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The expression 2a^2 +2b^2 can be written in the form of 18x + y, where

805+ (Hard) | Absolute Values, Multiples and Factors

805+ (Hard) | Absolute Values, Multiples and Factors hide tags

Bunuel

10 Jun 2020, 04:00

18

5

3,464

by: bumpbot

09 Jan 2024, 00:02

ER

Steve spent a total of $36 on transportation for 3 days. What was his

605-655 (Medium) | Statistics and Sets Problems

605-655 (Medium) | Statistics and Sets Problems hide tags

alphonsa

09 Sep 2014, 23:05

13

3

3,463

by: bumpbot

23 Jan 2026, 02:27

ER

A and B brought a radio each for the same price, $z. A and B sold thei

555-605 (Medium) | Percent and Interest Problems

555-605 (Medium) | Percent and Interest Problems hide tags

Bunuel

07 Nov 2019, 03:04

5

6

3,463

by: bumpbot

02 Nov 2022, 04:32

ER

Is p < 5? (1) In the coordinate plane, (3,p) lies inside the circle

505-555 (Easy) | Coordinate Plane

505-555 (Easy) | Coordinate Plane hide tags

Bunuel

20 Mar 2020, 01:41

7

8

3,463

by: razorhell

21 Mar 2020, 05:18

ER

A and B are distinct natural numbers. Is A + B odd?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

EgmatQuantExpert

01 Mar 2019, 02:22

10

9

3,462

by: bumpbot

21 Nov 2025, 09:40

ER

Does (x − y)^2 = 100 ? (1) x^2 + y^2 = 52 (2) x + y = 2

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

04 Aug 2020, 22:55

13

7

3,462

by: youcouldsailaway

05 Nov 2023, 08:32

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A certain car travels 18 miles per gallon of gas on city streets and 3

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

07 Feb 2020, 06:22

8

5

3,462

by: HC1993

18 Sep 2022, 04:00

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If xy ≠ 0, is x = y? (1) |x| = |y| (2) xy > 0

Sub 505 (Easy) | Absolute Values, Inequalities

Sub 505 (Easy) | Absolute Values, Inequalities hide tags

Bunuel

01 Nov 2018, 00:17

10

7

3,462

by: QuantMadeEasy

20 Dec 2020, 00:11

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If x and y are positive, is 81^3 = 27^(y - x) ? (1) |y - x| = 4

655-705 (Hard) | Absolute Values, Exponents

655-705 (Hard) | Absolute Values, Exponents hide tags

Bunuel

11 Aug 2021, 07:30

11

8

3,461

by: Bunuel

22 Jun 2023, 01:03

ER

If y≠0 and y≠-1, is x/y > x/(y+1)?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

jimmylow

14 Aug 2016, 06:14

3

5

3,461

by: Bunuel

14 Aug 2016, 06:15

ER

What is the circumference of circle O?

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 Jun 2016, 02:06

1

9

3,460

by: Krabhay

18 Dec 2018, 23:44