GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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

Bunuel

25 Oct 2022, 08:11

179

15

79,272

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

188,864

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

488,486

by: bb

29 Aug 2025, 13:27

ER

A jar contains marbles of several different colors. Some marbles are

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

09 Nov 2023, 02:31

11

2

2,840

by: bumpbot

20 Nov 2024, 03:33

ER

What is the ratio of x:y:z given xyz not equal to 0?

605-655 (Medium) | Fractions and Ratios

605-655 (Medium) | Fractions and Ratios hide tags

Bunuel

28 Mar 2023, 01:30

11

4

3,106

by: Adarsh_24

27 Nov 2024, 03:15

ER

Anne and Bill each invested in both stocks and bonds in 2007. Who had

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

29 Nov 2024, 01:30

11

7

1,196

by: SP021

03 Dec 2024, 10:42

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If abc 0. Is abc > 0 ? (1) |a b | = |a| - |b| (2) |b + c| = |b|

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

21 Mar 2023, 03:30

11

3

1,627

by: bumpbot

16 Dec 2024, 08:59

ER

Pete made a trip to the beach, of which 80 kilometers were on highway

Sub 505 (Easy) | Distance and Speed Problems

Sub 505 (Easy) | Distance and Speed Problems hide tags

SergejK

18 Oct 2024, 08:38

11

3

3,936

by: GMATinsight

24 Dec 2024, 22:54

ER

A box contains balls that are either yellow, black or brown in color.

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

19 Jan 2022, 09:30

11

4

3,251

by: bumpbot

07 Jan 2025, 03:52

ER

If x is a positive integer, x^(1/2) an integer?

555-605 (Medium) | Exponents, Number Properties

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

adkikani

25 Nov 2017, 00:13

11

9

5,633

by: bumpbot

17 Jan 2025, 10:50

ER

If P is the product of all the numbers in set S, is P positive ?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

06 Jun 2023, 01:30

11

6

2,020

by: Happysumit007

20 Jan 2025, 10:34

ER

If ab > 0, does (a - 2)(b - 2) = 4 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

WoundedTiger

15 Aug 2013, 02:22

11

6

5,012

by: bumpbot

25 Feb 2025, 14:01

ER

A companys health plan has a deductible of $1,200,

805+ (Hard) | Fractions and Ratios +2 tags

805+ (Hard) | Fractions and Ratios, Percent and Interest Problems, Word Problems hide tags

MartyMurray

07 Mar 2026, 09:22

11

2

1,392

by: MartyMurray

25 Feb 2025, 15:56

ER

Rectangle ABCD is inscribed in a circle as shown above. What is the ra

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

25 May 2018, 01:08

11

5

8,714

by: bumpbot

07 Mar 2025, 09:13

ER

John wants to put the 78 pencils in the 6 boxes. The number of the eac

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

MathRevolution

19 Apr 2016, 06:05

11

3

3,343

by: bumpbot

13 Mar 2025, 17:21

ER

If xy = z, what is the value of x ? (1) y =2z (2) y^2 = 4

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

10 Oct 2017, 01:07

11

7

3,174

by: bumpbot

17 Mar 2025, 07:20

ER

The symbol ▽ represents one of the following operations...

Sub 505 (Easy) | Functions and Custom Characters

Sub 505 (Easy) | Functions and Custom Characters hide tags

nsp007

01 Jul 2010, 00:52

11

14

20,764

by: GMATinsight

23 Mar 2025, 02:04

ER

If x^y = 1 then what is the value of x?

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

BrentGMATPrepNow

16 Sep 2018, 09:07

11

6

2,516

by: bumpbot

29 Mar 2025, 14:57

ER

Each correctional facility in a certain state has the same number of

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

ruis

27 Mar 2024, 10:19

11

5

2,208

by: bumpbot

31 Mar 2025, 04:47

ER

If x and y are non-negative, is (x + y) greater than xy?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

07 Feb 2018, 21:21

11

6

6,410

by: bumpbot

06 Apr 2025, 04:41

ER

If X and N are positive integers, what is the remainder when X is

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

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

amanvermagmat

02 Jul 2018, 11:11

11

6

1,878

by: bumpbot

18 Apr 2025, 03:39

ER

The number N is 6H12, the hundred's digit being represented by H. What

605-655 (Medium) | Multiples and Factors

605-655 (Medium) | Multiples and Factors hide tags

Bunuel

16 Mar 2022, 01:30

11

3

3,582

by: bumpbot

18 Apr 2025, 06:16

ER

If m is a positive integer with k nonzero digits and no other digits.

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

06 Jan 2021, 01:15

11

4

2,957

by: bumpbot

22 Apr 2025, 05:03

ER

Joe, Bob and Dan worked in the ratio of 1:2:4 hours, respectively. How

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

07 Oct 2014, 08:55

11

4

11,897

by: bumpbot

24 Apr 2025, 07:17

ER

If x is a positive integer, is x^2 - 1 divisible by 24?

705-805 (Hard) | Number Properties, Remainders

705-805 (Hard) | Number Properties, Remainders hide tags

axezcole

25 Apr 2019, 01:45

11

8

4,966

by: Bunuel

30 Apr 2025, 00:25

ER

Rachel drove at a constant speed from inn A along a highway to inn B.

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

Bunuel

30 Apr 2025, 00:30

11

2

1,166

by: Abhiswarup

01 May 2025, 00:07

ER

What is the value of positive integer m?

705-805 (Hard) | Multiples and Factors

705-805 (Hard) | Multiples and Factors hide tags

Bunuel

13 Jan 2017, 09:01

11

16

3,357

by: bumpbot

19 May 2025, 03:20

ER

12 Days of Christmas GMAT Competition - Day 9: If a certain tree reach

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

21 Dec 2023, 07:00

11

4

4,568

by: bumpbot

19 May 2025, 11:40

ER

Of the 240 coats at a certain store, how many are green and are not

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

Bunuel

11 May 2024, 04:04

11

4

5,673

by: bumpbot

23 May 2025, 03:03

ER

Is x/y < 0.5 ? (1) When x and y are rounded to the nearest ten, the

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

02 Jun 2021, 06:00

11

2

1,925

by: bumpbot

26 May 2025, 15:54

ER

Is |x – 5| < 5? (1) x < -4 (2) x < 4

555-605 (Medium) | Absolute Values, Inequalities

555-605 (Medium) | Absolute Values, Inequalities hide tags

salopian

14 Jun 2020, 04:16

11

5

4,300

by: bumpbot

12 Jun 2025, 23:58

ER

Pat traveled a distance of 240 miles in x hours. For a part

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

innocous

22 Jun 2013, 01:04

11

5

4,563

by: SmileAndSolve

13 Jun 2025, 11:33

ER

What is greater, x or 1/x ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

GKomoku

09 Apr 2020, 11:25

11

2

3,579

by: bumpbot

16 Jun 2025, 01:48

ER

Is |x - 5| > |x - 35| ? (1) x < 10 (2) x < 25

605-655 (Medium) | Absolute Values, Inequalities

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

Bunuel

10 Jul 2023, 01:30

11

2

1,676

by: ProfessorX8

23 Jun 2025, 08:41

ER

If x is a positive integer, is (10x - 1) divisible by the positive int

705-805 (Hard) | Multiples and Factors, Number Properties

705-805 (Hard) | Multiples and Factors, Number Properties hide tags

Bunuel

04 Dec 2019, 02:38

11

3

2,632

by: bumpbot

24 Jun 2025, 04:06

ER

The side of an equilateral triangle has the same length as the diagona

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

Bunuel

23 Jun 2015, 23:11

11

10

22,620

by: bumpbot

29 Jun 2025, 16:00

ER

Is x equal to 5 ? (1) x ≥ 5 (2) x ≤ 5

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

23 Sep 2018, 21:25

11

8

8,188

by: bumpbot

01 Jul 2025, 13:19

ER

12 Days of Christmas GMAT Competition - Day 10: Elvin has sent wish

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

22 Dec 2023, 07:01

11

5

4,227

by: ManishaPrepMinds

03 Jul 2025, 00:47

ER

There is an arithmetic sequence An where n is a positive integer such

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

MathRevolution

08 Nov 2016, 02:15

11

8

4,089

by: bumpbot

03 Jul 2025, 05:08

ER

On 1st January of a certain year, Jones invested a total of $10000 u

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

Abhi077

29 Dec 2020, 08:49

11

6

3,317

by: bumpbot

06 Jul 2025, 19:19

ER

If a and b are positive integers, is the sum a + b divisible by 4?

655-705 (Hard) | Multiples and Factors, Number Properties

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

kiran120680

01 Apr 2019, 10:10

11

5

3,985

by: bumpbot

10 Jul 2025, 13:22

ER

If x, y, and z are digits is (x + y + z) a multiple of 9?

655-705 (Hard) | Multiples and Factors, Number Properties

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

Yalephd

17 Mar 2011, 17:04

11

9

9,942

by: bumpbot

10 Jul 2025, 13:27

ER

Zelma scored 90, 88, and 92 on 3 of the 6 mathematics tests that she

Sub 505 (Easy) | Statistics and Sets Problems

Sub 505 (Easy) | Statistics and Sets Problems hide tags

Bunuel

23 May 2020, 07:12

11

3

8,693

by: bumpbot

15 Jul 2025, 14:32

ER

For positive integers n and m (n>m), is the average (arithmetic mean)

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

GMATBusters

07 Oct 2018, 06:39

11

9

2,931

by: bumpbot

17 Jul 2025, 19:46

ER

Last year 4/5 of the applicants for a job on a police force passed the

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

16 Dec 2014, 05:47

11

8

7,135

by: bumpbot

18 Jul 2025, 04:34

What is the number of female employees in Company X ?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

broall

21 Feb 2018, 01:55

11

2

14,204

by: bumpbot

18 Jul 2025, 14:04

ER

If there are different numbers of red, blue and white balls, is the nu

705-805 (Hard) | Fractions and Ratios

705-805 (Hard) | Fractions and Ratios hide tags

chetan2u

28 Oct 2017, 05:34

11

13

3,029

by: bumpbot

19 Jul 2025, 00:35

ER

If z=(m + m/3)(n+2/(n^(-1)) and mn#0, what is the value of Z?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

harish1986

13 Jan 2016, 10:47

11

10

7,486

by: bumpbot

19 Jul 2025, 18:14

ER

In an adventure sports club, Silver class membership is awarded to

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

03 Jul 2024, 01:30

11

5

1,904

by: bumpbot

20 Jul 2025, 12:42

ER

Is 1/(a + b) > b - a?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

23 Mar 2017, 06:07

11

8

3,247

by: aaronmart14

25 Jul 2025, 14:46

ER

Does Charles weigh more than Dianne?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

rjaimer1

13 Feb 2021, 16:33

11

5

4,587

by: bumpbot

28 Jul 2025, 23:24

ER

If X is a positive integer, what is the remainder when X^2 is divided

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

firas92

19 Jun 2019, 07:17

11

4

3,859

by: bumpbot

31 Jul 2025, 06:41

ER

Given a positive sequence e1, e2, ..., e7. In the sequenc

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

SaidNassar1991

08 Oct 2020, 10:13

11

3

2,288

by: bumpbot

31 Jul 2025, 10:11