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

179

15

79,535

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

188,956

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,636

by: bb

29 Aug 2025, 13:27

ER

An inspection agency follows these guidelines for newly laid pipelines

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

01 Apr 2026, 19:00

8

3

509

by: PlacidSoyabean

22 Apr 2026, 02:30

ER

Train A leaves New York for Boston at 3 PM and travels at

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

1, 2, 3

rohitgoel15

22 Jul 2010, 00:49

1.4k

43

141,102

by: bumpbot

22 Apr 2026, 01:50

ER

During two 7-day promotional weeks, Week 1 and Week 2, a bike-share

805+ (Hard) | Percent and Interest Problems, Word Problems

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

Bunuel

14 Apr 2026, 19:00

4

252

by: Bunuel

21 Apr 2026, 03:30

ER

If there are only girl students in a class, is the number of students

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

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

chetan2u

16 Oct 2017, 04:17

13

6

2,988

by: bumpbot

20 Apr 2026, 03:01

What is the value of a + b + 1?

805+ (Hard) | Algebra, Math Related

805+ (Hard) | Algebra, Math Related hide tags

NathanMasky

24 Feb 2025, 14:57

10

2

1,050

by: bumpbot

19 Apr 2026, 19:38

ER

When a certain drug was administered to a group of patients, some pati

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

edwin.que

01 Nov 2023, 22:31

138

8

18,609

by: bumpbot

19 Apr 2026, 04:32

ER

Train A leaves New York and is heading towards Boston at a constant

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

Bunuel

14 Apr 2025, 00:30

13

4

1,399

by: bumpbot

18 Apr 2026, 20:56

ER

Set X consists of exactly four distinct integers that are greater than

805+ (Hard) | Number Properties, Statistics and Sets Problems

805+ (Hard) | Number Properties, Statistics and Sets Problems hide tags

Sajjad1994

29 Oct 2020, 12:02

16

4

3,255

by: bumpbot

17 Apr 2026, 00:52

ER

In the sequence of positive integers a1,a2,a3,...,an−1,an where n > 5

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

nislam

10 Nov 2021, 10:52

12

3

4,824

by: Adit_

16 Apr 2026, 23:33

ER

A bakery packed 150 dessert boxes in two batches. Each box contained

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

08 Apr 2026, 19:00

4

3

313

by: Bunuel

16 Apr 2026, 02:45

The nth term of an increasing sequence S is given by Sn = Sn-1 + Sn-2

805+ (Hard) | Algebra, Sequences

805+ (Hard) | Algebra, Sequences hide tags

niteshwaghray

01 Jun 2017, 22:35

43

3

7,696

by: bumpbot

16 Apr 2026, 02:25

ER

The GMAT is scored on a scale of 200 to 800 in 10 point incr

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

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

1, 2

enigma123

15 Apr 2026, 11:36

399

22

35,508

by: bumpbot

15 Apr 2026, 18:52

ER

There is a sequence, 4(10^n), 4(10^(n-1)), ..., 4(10^(n-m)), for posit

805+ (Hard) | Number Properties, Sequences

805+ (Hard) | Number Properties, Sequences hide tags

Bunuel

20 Dec 2015, 06:37

69

12

13,748

by: bumpbot

15 Apr 2026, 06:06

ER

A cafe tracked the number of online orders over three consecutive days

805+ (Hard) | Percent and Interest Problems

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

Bunuel

07 Apr 2026, 19:00

9

3

352

by: Bunuel

15 Apr 2026, 02:00

ER

Laser diodes and micro-controllers are among the components used to ma

805+ (Hard) | Percent and Interest Problems

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

Vishh13

05 Oct 2020, 11:25

14

5

2,257

by: bumpbot

14 Apr 2026, 03:05

ER

What is the mean (average) of the numbers in the series if each number

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

12 Jul 2019, 01:30

6

5

2,419

by: nbharti

13 Apr 2026, 11:27

ER

At the Northgate distribution center, a sorting line can run in one of

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

05 Apr 2026, 19:00

6

5

313

by: Bunuel

13 Apr 2026, 02:30

ER

The average of a certain set of numbers is 20 and its

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

earnit

09 Apr 2018, 04:39

44

8

10,440

by: bumpbot

11 Apr 2026, 04:58

ER

In any twenty-four-hour period, a certain faulty clock gains anywhere

805+ (Hard) | Non-Math Related, Word Problems

805+ (Hard) | Non-Math Related, Word Problems hide tags

p456

03 Nov 2023, 06:21

174

17

15,593

by: Gmat860sanskar

10 Apr 2026, 11:12

ER

4 numbers: w, 8, y, and z are in arithmetic progression, where w < 8 <

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Snehaaaaa

30 Mar 2022, 05:54

6

2

1,543

by: bumpbot

10 Apr 2026, 10:10

ER

What is the length of Train A if it crosses Bridge X in 30 seconds

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

1, 2

guddo

30 May 2024, 10:59

130

27

13,054

by: Gmat860sanskar

09 Apr 2026, 11:30

ER

A museum received 7 storage crates for an upcoming exhibit including

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

02 Apr 2026, 19:00

7

3

382

by: Bunuel

09 Apr 2026, 02:30

ER

Professional tasters rate the sweetness of a food or beverage

805+ (Hard) | Mixture Problems

805+ (Hard) | Mixture Problems hide tags

gsnunes

23 Nov 2025, 10:49

37

16

3,887

by: Puranjaysapra

07 Apr 2026, 21:48

ER

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

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

kevincan

24 Feb 2026, 10:29

5

2

415

by: MartyMurray

05 Apr 2026, 21:35

ER

Two people are to be selected at random from a certain group that

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

asdfghjkl5271

06 Nov 2023, 18:16

177

14

19,877

by: Adit_

05 Apr 2026, 02:06

ER

To arrive at its destination on time, a bus should have maintained

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

Bunuel

14 Aug 2023, 09:37

138

18

20,986

by: Vivek1707

03 Apr 2026, 04:53

ER

At a professional training conference, 44 attendees signed up for the

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

29 Mar 2026, 19:00

14

4

437

by: Aman2487

03 Apr 2026, 01:24

ER

A health inspection was conducted

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

kevincan

01 Mar 2026, 05:43

1

350

by: Adit_

02 Apr 2026, 22:59

ER

At a community arts center with 240 members, every member attended at

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

30 Mar 2026, 19:00

2

4

324

by: FluidChess

02 Apr 2026, 08:25

ER

A campus bookstore bought 60 notebooks for a total of 540 euros.

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

30 Mar 2026, 19:00

8

3

346

by: Bunuel

02 Apr 2026, 04:45

ER

If, in the addition problem above, a, b, c, d, e, f, x, y, a

805+ (Hard) | Arithmetic

805+ (Hard) | Arithmetic hide tags

1, 2

mn2010

18 Jul 2010, 15:59

470

22

58,590

by: Gmat860sanskar

30 Mar 2026, 12:11

ER

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

805+ (Hard) | Multiples and Factors, Probability

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

chetan2u

24 Apr 2016, 21:28

22

5

4,406

by: bumpbot

30 Mar 2026, 00:05

ER

A factory recently bought two machines, A and B, each operating at its

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

Bunuel

19 Mar 2026, 19:01

7

4

540

by: Bunuel

28 Mar 2026, 02:15

ER

A clothing store's revenue last May was 6 percent less than

805+ (Hard) | Percent and Interest Problems, Word Problems

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

mun23

20 Nov 2023, 07:17

317

18

39,241

by: bumpbot

28 Mar 2026, 02:07

ER -1

Giagias biscuits come in boxes of two sizes. The medium-siz

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

kevincan

27 Mar 2026, 22:50

3

371

by: kevincan

27 Mar 2026, 22:49

ER

Jane can paint the wall in J hours, and Bill can paint the

805+ (Hard) | Word Problems, Work and Rate Problems

805+ (Hard) | Word Problems, Work and Rate Problems hide tags

1, 2

Bunuel

20 Nov 2009, 09:37

371

22

40,078

by: bumpbot

27 Mar 2026, 15:49

ER

The mode of a set of integers is x. what is the difference

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Smita04

20 Sep 2012, 05:05

118

17

31,246

by: bumpbot

27 Mar 2026, 02:16

ER

At two shops, A and B, the prices per kilogram

805+ (Hard) | Fractions and Ratios, Word Problems

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

kevincan

27 Mar 2026, 03:29

1

260

by: percyboi66

26 Mar 2026, 15:18

ER

12 Days of Christmas GMAT Competition - Day 7: Set A consists of disti

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

20 Dec 2020, 19:00

28

12

5,561

by: bumpbot

25 Mar 2026, 08:41

ER

The village of Devis is hosting a summit attended by 100 dip

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

kevincan

24 Mar 2026, 08:16

1

302

by: Edskore

24 Mar 2026, 09:39

ER

Ewa earns a base salary of $1,000 each month plus a fixed co

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

kevincan

22 Mar 2026, 11:59

11

16

535

by: ThatTallGuy

24 Mar 2026, 05:43

ER

Reserve tank 1 is capable of holding z gallons of water. Water is pump

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

JCLEONES

05 Apr 2018, 05:42

186

11

31,962

by: vishnubansal1812

23 Mar 2026, 10:36

ER

A school administrator will assign each student in a group

805+ (Hard) | Multiples and Factors, Word Problems

805+ (Hard) | Multiples and Factors, Word Problems hide tags

1, 2, 3

gwiz87

03 Jun 2021, 01:59

1.8k

59

138,579

by: bumpbot

22 Mar 2026, 07:04

ER

12 Days of Christmas GMAT Competition - Day 12: Set A consists of 50

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

Bunuel

25 Dec 2020, 19:00

30

9

4,922

by: bumpbot

20 Mar 2026, 22:30

ER

Schwartz Bank has more than 100 interns. Of the m male inter

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

kevincan

21 Mar 2026, 01:35

2

1

312

by: kittiponrw

20 Mar 2026, 07:40

ER

The range of set A is R. A number having a value equal to R is added

805+ (Hard) | Statistics and Sets Problems

805+ (Hard) | Statistics and Sets Problems hide tags

nusmavrik

23 Aug 2010, 07:55

83

10

17,069

by: bumpbot

18 Mar 2026, 14:08

ER

In the game Cako, a player is awarded one tick for every third Alb cap

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

22 Sep 2021, 05:30

15

4

6,899

by: LeoLong2

18 Mar 2026, 00:57

ER

12 Days of Christmas GMAT Competition - Day 7: One liter of a Christma

805+ (Hard) | Mixture Problems

805+ (Hard) | Mixture Problems hide tags

Bunuel

19 Dec 2023, 07:00

36

12

5,600

by: bumpbot

16 Mar 2026, 07:24

The price of a particular stock in four consecutive years Y1, Y2

805+ (Hard) | Percent and Interest Problems

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

Anchrs

16 Mar 2026, 02:57

0

239

by: Anchrs

16 Mar 2026, 02:57

ER

When the point totals for 20 participants were recorded, thr

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

kevincan

15 Mar 2026, 16:03

2

1

255

by: Edskore

16 Mar 2026, 01:27