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

183

15

83,503

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

862

24

191,635

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

491,557

by: bb

29 Aug 2025, 13:27

ER

A company sells item X and Y at different discount before the Christma

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

23 Jul 2022, 13:30

3

2

1,258

by: bumpbot

25 Apr 2026, 05:35

ER

Fifty percent of all the students attending a school on a certain day

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

11 Nov 2019, 04:23

21

4

7,096

by: bumpbot

25 Apr 2026, 05:28

ER

10 children have ordered a total of 17 hamburgers, and each child has

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

14 Jan 2021, 01:15

8

9

2,945

by: Tanpok

25 Apr 2026, 04:04

ER

To fill an order, a manufacturer had to produce 1000 tools per day for

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

sandranjeim

13 Jun 2019, 02:42

120

13

26,693

by: bumpbot

25 Apr 2026, 03:31

ER

A supermarket holds a promotional lottery, whose winners

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

bhargavhhhhhhhh

02 Apr 2025, 10:19

3

2

1,387

by: rajdeep212003

25 Apr 2026, 01:20

ER

If a number n is pulled out of a hat at random

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

HKD1710

15 Jan 2017, 08:54

5

2

2,519

by: bumpbot

24 Apr 2026, 12:29

ER

Elena, Marco, and Sofia each had one folder to copy to an external

655-705 (Hard) | Non-Math Related, Word Problems

655-705 (Hard) | Non-Math Related, Word Problems hide tags

Bunuel

12 Apr 2026, 19:00

5

11

554

by: BPranav7

24 Apr 2026, 09:34

ER

Last year, a certain company began manufacturing product X

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

1, 2

Walkabout

01 Aug 2021, 04:04

912

22

85,514

by: bumpbot

24 Apr 2026, 06:38

ER

What is the tenth term in a series of 89 consecutive

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

brstorewala

17 May 2003, 03:00

33

16

12,110

by: bumpbot

24 Apr 2026, 03:35

ER

A collector plans to take 4 of his cars to an auto show. How many cars

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

24 May 2024, 01:30

14

5

2,784

by: bumpbot

24 Apr 2026, 01:32

ER

In the coordinate plane, a triangle has points (4,6), (8,6), and (x,y)

605-655 (Medium) | Coordinate Plane, Geometry

605-655 (Medium) | Coordinate Plane, Geometry hide tags

Bunuel

23 May 2018, 22:53

15

4

4,381

by: dhairya18

23 Apr 2026, 23:51

ER

From 1994 to 1995, the revenue of a company increased x percent. From

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

03 Jan 2021, 11:19

14

8

5,806

by: bumpbot

23 Apr 2026, 23:03

ER

At the Butterfly Scout Cookie Chow Down, each girl was given

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

fozzzy

08 Oct 2013, 05:50

8

5

5,702

by: bumpbot

23 Apr 2026, 21:25

ER

For each positive integer k, let ak = (1 + 1/(k+1)). Is the product a1

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

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

gmatt1476

21 Sep 2019, 15:20

196

13

27,816

by: bumpbot

23 Apr 2026, 15:12

ER

Yesterday it rained in Baronia. Did it rain in Dukia?

655-705 (Hard) | Non-Math Related

655-705 (Hard) | Non-Math Related hide tags

Bunuel

21 May 2016, 03:47

70

7

16,056

by: Bunuel

23 Apr 2026, 11:01

ER

In a certain Italian recipe book, every recipe that includes oregano

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

27 Jun 2024, 01:30

17

4

1,362

by: bumpbot

23 Apr 2026, 10:08

ER

A small factory that produces only upholstered chairs and sofas uses 1

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

26 Jun 2018, 05:50

23

6

12,831

by: bumpbot

23 Apr 2026, 09:50

ER

A car traveled a distance of d miles in t minutes at an average rate

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

Bunuel

23 May 2020, 09:14

30

7

12,561

by: bumpbot

23 Apr 2026, 09:09

ER

To receive a driver license, sixteen year-olds at Culliver High School

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

iamba

01 Jul 2007, 09:43

87

15

20,218

by: bumpbot

23 Apr 2026, 08:57

ER

There are three different ways to score in basketball. A successful

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

27 Jun 2024, 01:30

44

10

7,758

by: bumpbot

23 Apr 2026, 08:45

ER

Set S consists of n numbers arranged in ascending order. A

605-655 (Medium) | Statistics and Sets Problems

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

dancinggeometry

05 Sep 2008, 21:59

19

13

11,543

by: bumpbot

23 Apr 2026, 07:05

ER -1

Some of the students enrolled at college T are part-time

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

jimmyjamesdonkey

30 Apr 2026, 03:30

39

16

22,316

by: marle

23 Apr 2026, 03:30

ER

On a fishing expedition, a group of 13 fishermen caught a total of 160

655-705 (Hard) | Min-Max Problems, Statistics and Sets Problems

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

shasadou

02 Apr 2016, 03:59

82

16

17,415

by: KarishmaB

23 Apr 2026, 02:46

ER

A reseller bought a vintage floor lamp at a weekend flea market and

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

16 Apr 2026, 19:00

11

3

410

by: Bunuel

23 Apr 2026, 02:45

ER

At a farmers market, Mia, Leo, and Owen each bought some oranges.

605-655 (Medium) | Statistics and Sets Problems

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

Bunuel

16 Apr 2026, 19:00

2

3

357

by: Bunuel

23 Apr 2026, 01:45

ER

If s is the sequence of more than two observations

805+ (Hard) | Statistics and Sets Problems

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

PyjamaScientist

03 Oct 2021, 00:30

16

3

1,954

by: bumpbot

23 Apr 2026, 01:37

ER

A set consists of n distinct integers arranged in the order of increas

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

Bunuel

29 May 2020, 02:06

18

11

3,787

by: bumpbot

23 Apr 2026, 01:31

ER

Michael arranged all his books in a bookcase with 10 books on each she

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

10 Feb 2014, 00:27

284

15

42,747

by: bumpbot

22 Apr 2026, 13:00

ER

A typist typed complete pages of several books in a day. If he typed

655-705 (Hard) | Work and Rate Problems

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

Bunuel

06 Aug 2024, 01:30

19

7

3,406

by: Adit_

22 Apr 2026, 06:00

ER

Let [x] represent the average of the greatest integer less than or equ

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

Bunuel

29 Jan 2021, 01:15

7

3

2,581

by: bumpbot

22 Apr 2026, 04:54

ER

A man spends 20% of his income on house rent, 25% of the remaining inc

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

28 Jan 2021, 01:15

11

3

5,833

by: bumpbot

22 Apr 2026, 04:46

ER

The number of touchscreen personal organizers currently in stock is p

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

22 Apr 2026, 04:08

6

7

5,625

by: bumpbot

22 Apr 2026, 04:04

ER

There are a number of red beads and white beads in a jar. If Mike were

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

07 Apr 2016, 08:36

12

3

4,498

by: bumpbot

22 Apr 2026, 03:54

ER

At a warehouse, the daily output of Machine Orion is two-thirds of the

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

15 Apr 2026, 19:00

4

3

302

by: Bunuel

22 Apr 2026, 02:45

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

552

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

141,475

by: bumpbot

22 Apr 2026, 01:50

ER

At the start of a data-conversion job, two servers, Alpha and Beta

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

15 Apr 2026, 19:00

4

373

by: Bunuel

22 Apr 2026, 01:15

ER

At a certain company, 40% of the women are over 50 years old and 50% o

655-705 (Hard) | Percent and Interest Problems, Word Problems

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

Bunuel

23 Sep 2015, 03:22

28

10

9,204

by: bumpbot

21 Apr 2026, 18:29

ER

Julie is selling lemonades in two sizes, small and large. Small lemona

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

23 Sep 2015, 22:51

27

5

5,225

by: bumpbot

21 Apr 2026, 18:28

ER

The average (arithmetic mean) of a list of positive numbers is what

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

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

Bunuel

07 Nov 2017, 23:25

38

8

8,924

by: bumpbot

21 Apr 2026, 08:50

ER

What is the average (arithmetic mean) of a certain sequence of N

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

22 Sep 2023, 01:30

6

3

1,845

by: bumpbot

21 Apr 2026, 08:26

ER

Last year the first $ 30,000 of each Country X resident's

555-605 (Medium) | Percent and Interest Problems, Word Problems

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

eybrj2

24 Feb 2012, 23:27

7

2

4,894

by: bumpbot

21 Apr 2026, 07:31

ER

Was the average (arithmetic mean) score that Steve got per subject gre

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

01 Nov 2018, 00:12

5

2

2,068

by: bumpbot

21 Apr 2026, 05:06

ER

Before the start of the fall service cycle, the city transit authority

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

14 Apr 2026, 19:00

5

4

331

by: Bunuel

21 Apr 2026, 04:00

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

5

4

297

by: Bunuel

21 Apr 2026, 03:30

ER

Last month a phone company charged $ 0.07 per minute for the first 300

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Skywalker18

20 Jun 2016, 11:04

192

18

40,786

by: bumpbot

21 Apr 2026, 03:10

ER

For a trade-show booth, a crew assembled 10 display panels. Some were

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

13 Apr 2026, 19:00

7

4

373

by: Bunuel

21 Apr 2026, 01:45

ER

A set of data consists of 4 integers. What is the standard

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

nusmavrik

24 Aug 2010, 01:28

29

7

8,866

by: bumpbot

21 Apr 2026, 01:19

ER

Cedar Court and Maple Court have the same number of occupied apartment

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

12 Apr 2026, 19:00

5

6

403

by: DropletMaverick

21 Apr 2026, 01:12

ER

How many different 5-person teams can be formed from a group

Sub 505 (Easy) | Combinations

Sub 505 (Easy) | Combinations hide tags

gmatJP

22 Jun 2010, 19:14

209

13

49,834

by: bumpbot

20 Apr 2026, 22:40