GMAT Data Sufficiency (DS) Forum - Free Practice Questions

ER

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

Bunuel

25 Oct 2022, 08:11

176

15

78,583

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

854

24

188,436

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

487,785

by: bb

29 Aug 2025, 13:27

ER

Material A costs $3 per kilogram, and Material B costs $5 per kilogram

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

1, 2

alltimeacheiver

05 Aug 2017, 00:16

620

23

90,929

by: Aboyhasnoname

24 Jun 2025, 01:08

ER

What is the greatest common divisor of positive integers m and n ?

605-655 (Medium) | Multiples and Factors, Number Properties

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

1, 2

lahoosaher

06 Jun 2019, 08:23

412

20

91,529

by: totaltestprepNick

11 Mar 2026, 10:09

ER

What is the average (arithmetic mean) of eleven consecutive

555-605 (Medium) | Statistics and Sets Problems

555-605 (Medium) | Statistics and Sets Problems hide tags

1, 2

zz0vlb

23 Apr 2010, 18:05

469

26

92,297

by: ankushsambare

14 Apr 2026, 03:12

ER

If [x] denotes the greatest integer less than or equal to x

Sub 505 (Easy) | Functions and Custom Characters

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

1, 2

musabber

05 Mar 2020, 00:24

173

27

92,835

by: ManifestDreamMBA

20 Apr 2025, 09:18

ER

On the number line, the distance between x and y is greater than the

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

jj97cornell

03 Feb 2012, 14:32

446

19

93,483

by: bumpbot

15 Apr 2025, 03:24

ER

What is the remainder when the positive integer n is divided by 12?

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

windofchange

29 Oct 2017, 00:32

379

16

93,716

by: bumpbot

05 Sep 2024, 03:21

ER

On a certain sight-seeing tour, the ratio of the number of women to th

555-605 (Medium) | Fractions and Ratios, Word Problems

555-605 (Medium) | Fractions and Ratios, Word Problems hide tags

clubzzang

18 Jul 2019, 01:47

489

17

94,138

by: Bunuel

03 Jan 2026, 05:18

ER

Warehouse W's revenue from the sale of sofas was what percen

555-605 (Medium) | Percent and Interest Problems

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

1, 2

young_gun

11 Mar 2014, 01:30

437

20

94,737

by: bumpbot

30 May 2025, 03:12

ER

If n and k are positive integers, is n divisible by 6?

555-605 (Medium) | Multiples and Factors

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

tarek99

27 Aug 2009, 17:15

335

12

95,378

by: bumpbot

23 Jun 2025, 15:21

ER

If y ≠ 1, is x = 1 ? (1) x^2 + y^2 = 1 (2) y = 1 - x

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

1, 2

MDK

11 Oct 2013, 11:50

529

21

95,389

by: bumpbot

10 Dec 2025, 01:59

ER

If x and y are integers greater than 1, is x a multiple of y?

605-655 (Medium) | Multiples and Factors

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

enigma123

07 Jun 2019, 04:41

553

11

95,413

by: lehung97

02 Feb 2026, 10:42

ER

In the xy-plane, region R consists of all the points (x, y)

805+ (Hard) | Coordinate Plane, Inequalities

805+ (Hard) | Coordinate Plane, Inequalities hide tags

1, 2

metallicafan

03 Aug 2021, 02:46

929

24

95,798

by: bumpbot

03 Apr 2025, 12:57

ER

Each employee of a certain task force is either a manager or a directo

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

achan

13 Jun 2019, 03:22

728

18

96,519

by: bumpbot

31 Oct 2025, 10:03

ER

In the figure shown, the measure of angle PRS is how many degrees grea

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Sylvan

27 Nov 2018, 01:55

420

18

96,768

by: bumpbot

23 Dec 2023, 19:11

ER

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamp

655-705 (Hard) | Arithmetic, Word Problems

655-705 (Hard) | Arithmetic, Word Problems hide tags

1, 2

udaymathapati

26 Sep 2010, 11:48

906

26

97,444

by: bumpbot

19 Dec 2025, 02:52

ER

What is the value of y? (1) 3|x^2 - 4| = y - 2 (2) |3 - y| = 11

655-705 (Hard) | Absolute Values

655-705 (Hard) | Absolute Values hide tags

prashantbacchewar

11 Sep 2023, 07:55

238

19

97,624

by: bumpbot

23 Sep 2025, 16:53

ER

What is the median number of employees assigned per project

555-605 (Medium) | Statistics and Sets Problems

555-605 (Medium) | Statistics and Sets Problems hide tags

1, 2

ITIZCODE

04 May 2012, 02:26

876

28

97,998

by: RAZANMURADI

09 Jun 2025, 07:30

ER

If x and y are integers, is x > y?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

1, 2

Walkabout

16 Jun 2021, 10:08

604

32

98,041

by: bumpbot

17 Jan 2026, 07:17

ER

Machines X and Y work at their respective constant rates. How many mor

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

1, 2

ravitejapandiri

18 Sep 2010, 21:13

416

29

100,177

by: bumpbot

05 Apr 2026, 16:12

ER

If p and n are positive integers and p > n, what is the remainder when

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

1, 2

BANON

23 Feb 2012, 08:10

598

30

100,819

by: Bunuel

20 Mar 2026, 06:03

ER

A certain list consists of 3 different numbers. Does the median of the

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

1, 2

karovd

02 Jul 2021, 02:12

980

25

101,318

by: bumpbot

01 Jan 2026, 07:07

ER

Max (x,y) is defined as the maximum of x and y, and min(x,y)

555-605 (Medium) | Functions and Custom Characters, Min-Max Problems

555-605 (Medium) | Functions and Custom Characters, Min-Max Problems hide tags

GMATD11

28 Feb 2012, 19:52

59

7

102,112

by: bumpbot

15 Feb 2024, 09:28

ER

In the sequence of positive numbers x1, x2, x3, ..., what is the value

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

testprep2010

21 Jun 2010, 15:58

346

19

102,262

by: totaltestprepNick

01 Mar 2026, 19:19

ER

If x is an integer, what is the value of x? (1) x^2 - 4x + 3

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

1, 2

dimitri92

04 Aug 2012, 00:59

966

25

102,510

by: bumpbot

23 Jan 2026, 08:22

ER

Does the integer k have a factor p such that 1 < p < k ?

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

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

1, 2

gmatcracker2010

19 Jun 2010, 03:49

982

37

102,559

by: Aboyhasnoname

16 Jun 2025, 04:45

ER

Each of the 25 balls in a certain box is either red, blue or white and

605-655 (Medium) | Overlapping Sets, Probability

605-655 (Medium) | Overlapping Sets, Probability hide tags

1, 2

lexis

05 Feb 2019, 06:00

635

39

104,381

by: DmitryFarberMPrep

27 Jun 2025, 23:51

ER

In the figure above, if MNOP is a trapezoid and NOPR is a pa

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

1, 2

roygush

29 Apr 2022, 02:31

575

26

104,753

by: bumpbot

30 Mar 2023, 09:34

ER

If a rectangular region has perimeter P inches and area A sq

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

1, 2

olifurlong

17 Jun 2021, 00:54

615

38

105,567

by: bumpbot

28 Jan 2025, 14:05

ER

A pentagon with 5 sides of equal length and 5 interior angles of equal

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

1, 2, 3, 4

Bunuel

01 Jun 2021, 03:27

1.0k

70

105,725

by: IanStewart

27 Apr 2025, 18:14

ER

In isosceles triangle RST what is the measure of angle R?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

gmatgg

08 Mar 2010, 22:46

214

15

106,339

by: bumpbot

23 Oct 2024, 03:48

ER

If x, y and z are positive numbers, is z between x and y?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

1, 2

vcbabu

23 May 2021, 12:18

554

25

106,527

by: bumpbot

01 Feb 2025, 01:32

ER

In the rectangular coordinate system shown above, does the

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

shanewyatt

09 Oct 2009, 20:43

735

11

107,016

by: bumpbot

15 Oct 2025, 12:19

ER

If x and y are positive integers such that x = 8y + 12, what is the

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

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

1, 2

metallicafan

31 Aug 2010, 01:22

953

33

107,290

by: egmat

03 Oct 2025, 03:34

ER

100 Hardest Data Sufficiency Questions

655-705 (Hard)

655-705 (Hard) hide tags

Bunuel

30 Oct 2013, 02:26

446

19

109,456

by: bumpbot

16 Jun 2025, 03:41

ER

Six countries in a certain region sent a total of 75 representatives

655-705 (Hard) | Min-Max Problems, Word Problems

655-705 (Hard) | Min-Max Problems, Word Problems hide tags

1, 2

LM

27 Apr 2010, 09:57

712

23

109,511

by: rak08

22 May 2025, 21:26

ER

In triangle ABC, point X is the midpoint of side AC and

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

1, 2

yezz

18 Aug 2009, 18:44

1.1k

24

109,649

by: bumpbot

26 Dec 2025, 23:43

ER

The positive integer k has exactly two positive prime factors, 3 and 7

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

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

gmatnub

04 Jan 2018, 07:54

718

19

110,651

by: kanikaa9

23 May 2025, 01:31

ER

If x and y are positive integers, what is the value of xy?

Sub 505 (Easy) | Multiples and Factors, Number Properties

Sub 505 (Easy) | Multiples and Factors, Number Properties hide tags

ctgmat123

30 Jun 2012, 05:29

319

19

110,736

by: totaltestprepNick

23 Feb 2026, 12:55

ER

In the figure above, is the area of triangular region ABC

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

1, 2

jfk

10 Jun 2012, 00:28

791

23

113,789

by: bumpbot

01 Feb 2025, 09:44

ER

In the xy-plane, does the line with equation y = 3x + 2 contains the

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

1, 2

gaurav2k101

13 Jun 2019, 03:48

901

20

116,706

by: bumpbot

26 Dec 2024, 07:46

ER

The sequence a1, a2, a3, ..., an of n integers is such that ak = k if

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

1, 2

Summer3

11 Jun 2019, 04:29

338

21

116,998

by: totaltestprepNick

01 Mar 2026, 19:22

ER

If [x] denotes the least integer greater than or equal to x

555-605 (Medium) | Functions and Custom Characters

555-605 (Medium) | Functions and Custom Characters hide tags

1, 2

macwanjason

15 Jun 2021, 00:51

587

24

117,188

by: totaltestprepNick

24 Feb 2026, 12:56

ER

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

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

1, 2

catty2004

12 May 2017, 01:29

473

23

118,468

by: bumpbot

03 Jul 2025, 05:04

ER

For any integers x and y, min(x, y) and max(x, y) denote the

655-705 (Hard) | Functions and Custom Characters, Min-Max Problems

655-705 (Hard) | Functions and Custom Characters, Min-Max Problems hide tags

1, 2

snkrhed

29 May 2010, 13:23

559

20

121,604

by: bumpbot

28 Oct 2025, 22:54

ER

Is x > y ? (1) x^(1/2) > y (2) x^3 > y

805+ (Hard) | Exponents +2 tags

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

1, 2

shrouded1

01 Oct 2019, 04:20

872

30

123,848

by: kanavgoyal97

06 Jun 2025, 04:27

ER

If x, y, and z are three-digit positive integers and if x =

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

1, 2

conty911

18 Sep 2012, 09:16

930

25

123,874

by: bumpbot

22 Nov 2025, 07:44

ER

On the number line shown, is zero halfway between r and s ?

705-805 (Hard) | Absolute Values, Inequalities

705-805 (Hard) | Absolute Values, Inequalities hide tags

1, 2

DenisSh

12 Oct 2009, 01:00

1.2k

39

124,395

by: Vishnu0001

26 Oct 2025, 00:03

ER

Is m + z > 0 (1) m - 3z > 0 (2) 4z - m > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

1, 2

kman

26 Apr 2018, 02:47

659

29

125,115

by: SomeOneUnique

01 Nov 2024, 18:30

ER

The hypotenuse of a right triangle is 10 cm. What is the

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

1, 2

marcusaurelius

09 May 2010, 11:43

658

30

126,366

by: bumpbot

07 Jan 2025, 16:34

ER

Of the students who eat in a certain cafeteria, each student either

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

1, 2

dimitri92

04 Jun 2010, 00:29

631

26

127,756

by: AnkitNandwani1

11 Apr 2026, 01:57