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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100 Hardest and easiest questions for DS as of April 2026

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Bunuel

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16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

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488,459

by: bb

29 Aug 2025, 13:27

Records show that over two weeks, everyone who shopped at Best Bet

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MT1302

18 Mar 2024, 08:36

16

4

4,396

by: shaurya_gmat

17 Oct 2024, 10:56

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A college surveyed 50 students to determine the average

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shobhitb

18 Jun 2006, 06:33

2

12

4,397

by: ENGRTOMBA2018

19 Jul 2015, 07:52

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What is the greatest common divisor of distinct positive

555-605 (Medium) | Multiples and Factors, Number Properties

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eladshush

04 Oct 2010, 06:18

10

4

4,397

by: bumpbot

02 Oct 2019, 03:28

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If 50 mL of an x% alcohol solution is mixed with 30 mL of a y% alcohol

655-705 (Hard) | Algebra, Mixture Problems

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Bunuel

26 Nov 2019, 02:03

13

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by: bumpbot

20 Apr 2026, 05:15

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At a certain circus, every child was given either two or three balloon

505-555 (Easy) | Word Problems

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Bunuel

14 Nov 2014, 09:55

11

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by: bumpbot

24 Mar 2020, 21:50

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If x and y are integers and |xy| = 8, what is the value of |x + y|?

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Bunuel

01 Sep 2021, 05:30

4

4,400

by: bumpbot

20 Dec 2023, 03:29

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When tickets to a popular concert went on sale, a group of f

805+ (Hard) | Statistics and Sets Problems, Word Problems

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nidhi12

04 Jun 2014, 05:27

18

4

4,400

by: bumpbot

21 Jan 2026, 02:06

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In quadrilateral LMNP, MN is parallel to PL, what is the measure of an

655-705 (Hard) | Geometry

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Bunuel

05 Nov 2019, 06:06

8

4,401

by: Sohinik

18 Feb 2022, 01:31

If x and y are positive integers and y<5x, the remainder is z when 5x

705-805 (Hard) | Multiples and Factors +2 tags

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Jazzmin

25 Oct 2018, 19:18

11

6

4,403

by: Ekland

21 Apr 2021, 13:00

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What is the probability of (x+3)(x+10) being div by 6?

805+ (Hard) | Multiples and Factors, Probability

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chetan2u

24 Apr 2016, 21:28

22

5

4,403

by: bumpbot

30 Mar 2026, 00:05

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If a and b are positive odd integers less

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EgmatQuantExpert

13 Aug 2018, 02:48

19

13

4,404

by: EgmatQuantExpert

22 Mar 2018, 11:44

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If the product of the digits of the two-digit positive integer n is 2,

505-555 (Easy) | Number Properties

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Bunuel

19 Nov 2017, 10:19

2

8

4,405

by: vrkr

19 Nov 2017, 18:48

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If Car X followed Car Y across a certain bridge that is 1/2 mile long,

705-805 (Hard) | Word Problems, Work and Rate Problems

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GMATBusters

11 Apr 2020, 18:56

10

16

4,405

by: bumpbot

28 Aug 2023, 09:07

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Is the triangle with three sides a, b, c, isosceles?

555-605 (Medium) | Geometry

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hardnstrong

20 Jun 2013, 04:56

6

7

4,405

by: bumpbot

19 Jan 2024, 23:37

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If x ≠ 0, what is the value of (x^u/x^v)^(1/2) ?

505-555 (Easy) | Exponents, Number Properties

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hardnstrong

11 Jun 2010, 09:32

2

6

4,406

by: utkarshthapak

31 May 2017, 04:31

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A box is filled with cookies ranging in weight from 3.2 grams to 3.8

555-605 (Medium) | Word Problems

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Bunuel

08 Dec 2021, 07:30

1

4,406

by: JerryAtDreamScore

16 Dec 2021, 12:01

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On a certain highway, 25 percent of the vehicles are trucks and 20 per

705-805 (Hard) | Overlapping Sets

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Bunuel

07 Nov 2019, 03:25

6

4,406

by: bumpbot

10 Feb 2026, 23:26

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Is the range of numbers {a, b, c, d, e} greater than 10?

555-605 (Medium) | Statistics and Sets Problems

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whiplash2411

11 Oct 2010, 14:50

8

7

4,406

by: bumpbot

09 May 2026, 22:02

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If w ≠ x, w ≠ z, and x ≠ y, is (x-y)^3(w - z)^3/(w-z)^2(x-y)(w-x)^2 ?

555-605 (Medium) | Algebra, Inequalities

555-605 (Medium) | Algebra, Inequalities hide tags

Bunuel

13 Dec 2015, 05:52

9

5

4,407

by: bumpbot

12 Jun 2024, 04:29

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The cost, c and the revenue, r are related via the equation

555-605 (Medium) | Fractions and Ratios

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MathRevolution

11 Jan 2018, 01:42

10

3

4,407

by: bumpbot

29 Oct 2024, 09:07

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If 10 - ax = bx then what is value of |a-b|?

555-605 (Medium) | Absolute Values, Number Properties

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Harley1980

27 Jun 2015, 14:49

8

6

4,407

by: PriyanshuR

31 Aug 2025, 01:39

After the fourth 100-point test in their economics class, LaRae and An

555-605 (Medium) | Statistics and Sets Problems

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guddo

24 Jan 2024, 03:30

6

2

4,407

by: bumpbot

17 Nov 2025, 02:40

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In the figure, what is the value of r? (1) c = 2 (2) c = d

505-555 (Easy) | Coordinate Plane

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Bunuel

01 Mar 2023, 04:28

17

9

4,407

by: MartyMurray

31 Mar 2026, 05:08

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Is three digit integer n divisible by 12?

605-655 (Medium) | Multiples and Factors

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Bunuel

11 Oct 2016, 02:17

8

7

4,408

by: bumpbot

18 Nov 2023, 00:56

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If ∆ABC is an isosceles triangle, what is the

655-705 (Hard) | Geometry

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BrentGMATPrepNow

19 Sep 2018, 06:44

19

3

4,408

by: bumpbot

31 Mar 2024, 09:22

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If x is a positive integer, is x a multiple of 12?

555-605 (Medium) | Multiples and Factors

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Bunuel

22 Apr 2016, 04:36

3

4

4,409

by: bumpbot

27 Apr 2021, 09:34

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When line k, expressed by the equation y = mx + b, is graphed on a coo

605-655 (Medium) | Coordinate Plane

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Bunuel

07 Feb 2020, 06:14

6

4

4,409

by: bumpbot

17 Feb 2023, 07:40

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Is 3^x < x^3? (1) 3^x > 1 (2) 0 < x < 1

655-705 (Hard) | Exponents, Inequalities

655-705 (Hard) | Exponents, Inequalities hide tags

Bunuel

10 Sep 2017, 21:46

11

4,410

by: bumpbot

02 Aug 2023, 22:19

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What is the standard deviation of the terms in set N? (1) Every prime

555-605 (Medium) | Number Properties, Statistics and Sets Problems

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Bunuel

22 Jun 2021, 01:30

10

6

4,410

by: bumpbot

17 Oct 2023, 12:51

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On a certain fishing boat that catches tuna, wheeled carts

655-705 (Hard) | Word Problems

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xyztroy

07 Nov 2013, 01:17

10

9

4,410

by: bumpbot

10 Nov 2025, 13:13

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If pqrst = 4, then is p = 1/q ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

15 Jan 2015, 07:15

28

9

4,411

by: bumpbot

04 Jan 2021, 14:39

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If x and y are integers, and (-x)^x = ...

655-705 (Hard) | Exponents

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BrentGMATPrepNow

21 May 2018, 14:58

20

5

4,411

by: bumpbot

09 May 2024, 21:16

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In the graph shown above, does sector E represent the

555-605 (Medium) | Graphs and Illustrations

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GMATBusters

16 Apr 2020, 01:18

5

9

4,413

by: bumpbot

11 Oct 2024, 09:43

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Is a^2>b^2? 1) a<0 2) IaI>IbI

Sub 505 (Easy) | Absolute Values, Inequalities

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

GMATinsight

30 May 2017, 11:18

7

3

4,414

by: deepakbarchha1

07 Sep 2021, 03:00

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If xy = 7, what is xy(x + y)^2 ?

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

10 Oct 2017, 00:50

12

7

4,414

by: GMATGuruNY

20 Aug 2022, 20:55

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50% of the factory workers are not older than 30 years old. What perce

555-605 (Medium) | Percent and Interest Problems

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Bunuel

14 Jan 2020, 05:15

1

2

4,414

by: bumpbot

30 Apr 2024, 14:59

ER

Is ac + ((a^2 - 1)(b^2 - 1))^(1/2) <= 1 ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

12 Sep 2022, 08:36

19

6

4,416

by: bumpbot

27 Jun 2025, 15:32

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The average height of the girls in a certain class is 160cm and averag

605-655 (Medium) | Algebra, Statistics and Sets Problems

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

Bunuel

02 Oct 2018, 02:33

5

1

4,418

by: pushpitkc

24 Jan 2021, 02:05

What is the value of x? (1) x^4 = 625 (2) x^3 < x^2

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Carcass

31 Oct 2018, 22:14

4

2

4,419

by: bumpbot

05 Apr 2020, 10:14

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Three quarters, three dimes, and x nickels are the only coins in a jar

555-605 (Medium) | Probability

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Bunuel

07 May 2017, 14:21

11

4,420

by: bumpbot

28 Mar 2021, 10:00

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If r,s and t are integers, is r+s =square root of t

705-805 (Hard) | Absolute Values +2 tags

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Princ

22 May 2018, 03:47

35

14

4,421

by: bumpbot

25 Aug 2023, 02:14

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Greg's long - distance plan charges him $.5 for first 4 mins of a call

805+ (Hard) | Word Problems

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Bunuel

29 Sep 2019, 21:00

10

8

4,421

by: bumpbot

15 Feb 2026, 05:40

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Is x an odd number? (1) n^x = 1 (2) n^2 is a prime number

655-705 (Hard) | Algebra +2 tags

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MacFauz

28 Feb 2013, 07:23

8

10

4,422

by: manishuol

19 Apr 2013, 21:48

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If n is an integer, is n + 4 a prime number?

555-605 (Medium) | Number Properties

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metallicafan

05 Sep 2013, 08:19

8

7

4,422

by: MathRevolution

06 Dec 2015, 11:33

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Is a two digit positive integer mn, where x m is the tens digit and n

555-605 (Medium) | Multiples and Factors, Number Properties

555-605 (Medium) | Multiples and Factors, Number Properties hide tags

Bunuel

03 Dec 2018, 21:19

9

10

4,422

by: Bunuel

08 Nov 2021, 09:46

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If x = n + 5, y = n + 3, and x, y and n are positive integers, what is

655-705 (Hard) | Remainders

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Bunuel

30 Jul 2020, 04:55

17

8

4,422

by: bumpbot

11 Sep 2025, 05:21

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Does the graph of the function f(x) = ax^2 + bx + 7, where a, b and c

605-655 (Medium) | Coordinate Plane

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Bunuel

04 Oct 2021, 01:30

26

5

4,423

by: gmatophobia

16 Aug 2023, 13:19

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In the diagram above, ADF is a right triangle. BCED is a square with

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

mikemcgarry

03 Jun 2016, 14:54

24

5

4,423

by: bumpbot

16 Oct 2023, 00:20

ER

If a/3 = 4/b , is a less than b?

505-555 (Easy) | Inequalities

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Bunuel

06 Oct 2015, 05:56

2

8

4,425

by: asethi

11 Oct 2015, 08:16

ER

Is the integer n a multiple of 140?

555-605 (Medium) | Multiples and Factors

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filipembribeiro

26 Jan 2021, 16:02

5

4

4,426

by: bumpbot

11 Jun 2025, 20:19