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

182

15

83,088

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

191,313

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

491,204

by: bb

29 Aug 2025, 13:27

A certain 4-liter solution of water, vinegar, and alcohol consists of

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Brant22

19 Apr 2019, 04:08

10

5

3,444

by: bumpbot

04 Oct 2023, 01:57

ER

A certain 5-liter solution of floor cleaner consists of x liters of co

Sub 505 (Easy) | Mixture Problems

Sub 505 (Easy) | Mixture Problems hide tags

Bunuel

13 Feb 2021, 09:07

11

3

5,175

by: bumpbot

18 Sep 2023, 22:31

ER

A certain 6 ounce solution of water and alcohol contains j ounces of w

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

11 Oct 2019, 01:57

1

1,763

by: siddharthkapoor

11 Oct 2019, 08:42

ER

A certain alloy contains Lead, copper and tin. How many poun

505-555 (Easy) | Mixture Problems

505-555 (Easy) | Mixture Problems hide tags

rxs0005

11 Feb 2011, 09:14

51

8

19,793

by: bumpbot

11 Feb 2026, 08:52

ER

A certain amount of goods are purchased for 300 $. What is the percent

555-605 (Medium) | Percent and Interest Problems

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

Bunuel

10 Jun 2024, 01:30

5

1,567

by: KarishmaB

16 Jun 2024, 22:11

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A certain aquarium contains only goldfish and angelfish. If the aquari

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

19 May 2021, 06:30

7

2

5,855

by: bumpbot

19 Nov 2025, 22:55

ER

A certain aquarium holds three types of fish: angelfish, swordtails an

555-605 (Medium) | Fractions and Ratios

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

Bunuel

24 Mar 2015, 04:23

7

6

10,081

by: bumpbot

05 Dec 2022, 15:41

ER

A certain automobile dealer has 80 luxury cars in its inventory. Of th

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

25 Apr 2024, 01:30

10

3

1,763

by: bumpbot

03 Aug 2025, 22:54

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A certain bag contains only red and blue marbles. Are there at least 2

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Mar 2022, 07:30

3

2

2,352

by: bumpbot

23 Jan 2026, 10:10

ER

A certain bag contains only red balls, blue balls, and green

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

jadon

27 Jul 2014, 16:24

34

7

37,468

by: bumpbot

18 Mar 2025, 21:32

ER

A certain bag contains red, blue, and green marbles. What is the ratio

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

tudelue

11 Jun 2019, 03:08

15

4

21,433

by: bumpbot

10 Oct 2025, 23:02

ER

A certain bakery only sells bread. It sells bread at a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

macjas

27 May 2012, 09:55

8

5

7,742

by: bumpbot

28 Nov 2025, 08:49

ER

A certain bakery sells rye bread in 10-ounce loaves and 20-ounce loave

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

03 Jan 2017, 02:35

2

2,400

by: bumpbot

19 Jun 2021, 21:26

ER

A certain bakery sells rye bread in 16-ounce loaves and

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

fiendex

06 Feb 2012, 07:57

20

7

17,887

by: bumpbot

18 Aug 2025, 10:36

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A certain bakery sells wheat bread in 8-ounce loaves and 12-ounce loav

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

23 Feb 2022, 06:30

1

1,390

by: BrentGMATPrepNow

28 Feb 2022, 14:04

ER

A certain bank charges a maintenance fee on a standard checking accoun

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

naveenhv

06 May 2011, 10:17

8

4

11,035

by: bumpbot

19 Jul 2022, 03:00

ER

A certain bank has ten branches. What is the total amount of assets un

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

27 Jan 2020, 01:08

64

15

14,924

by: ManifestDreamMBA

06 Feb 2025, 09:02

ER

A certain bookcase has 2 shelves of books. On the upper

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

Walkabout

13 Dec 2012, 08:17

313

13

59,183

by: bumpbot

07 Jan 2026, 07:55

ER

A certain bookstore sold 1/2 of the books in its stock. Then, after an

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

06 Mar 2020, 02:03

11

13

4,661

by: TheUnicorn

08 Mar 2020, 23:24

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A certain box contains only blue (b), green (g) and red(r)

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

atalpanditgmat

26 May 2013, 10:45

68

11

10,778

by: bumpbot

14 Nov 2025, 12:59

ER

A certain box contains only red balls and green balls. If one ball is

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

23 Mar 2022, 05:00

1

2,401

by: JerryAtDreamScore

23 Mar 2022, 14:18

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A certain box has only a total of 7 red balls and green balls. If two

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

Bunuel

30 Jun 2023, 08:00

2

1,423

by: bumpbot

10 Jul 2025, 12:43

ER

A certain brand of computer can be bought with or without a hard drive

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

03 Mar 2025, 01:30

5

3

1,249

by: ajay0520

03 Mar 2025, 07:39

ER

A certain bread recipe calls for wheat, white flour, and oat

605-655 (Medium) | Fractions and Ratios

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

azule45

29 Oct 2010, 11:08

49

5

15,182

by: bumpbot

07 Jan 2026, 10:55

ER

A certain bread recipe calls for whole wheat flour, white

555-605 (Medium) | Fractions and Ratios

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

damham17

16 Mar 2012, 01:43

37

5

14,238

by: bumpbot

04 Jun 2023, 07:53

ER

A certain building has only 2-room and 3-room apartments to rent. If

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

23 Jul 2019, 08:00

18

5

8,211

by: bumpbot

17 Dec 2025, 07:30

ER

A certain business school has a student body of 2,000 students, 45% of

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

17 Feb 2015, 09:21

12

6

5,161

by: bumpbot

24 Sep 2024, 03:45

A certain business school wishes to offer admission to two of the cand

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Redmaster2

19 Jun 2025, 11:00

8

1

1,017

by: luvsic

19 Jun 2025, 14:43

ER

A certain cafeteria sells donuts and pizzas. Is the number of people

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

16 Oct 2024, 01:30

8

2

1,299

by: Abdelaali91

16 Oct 2024, 06:41

ER

A certain cake has two layers with pieces of fruit on top of each

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

lazarogb

20 Nov 2023, 09:23

65

14

18,528

by: bumpbot

04 Apr 2025, 16:56

ER

A certain calculator is able to display at most 10 digits, so that any

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

08 Oct 2019, 09:19

10

4

6,652

by: bumpbot

28 Jul 2025, 22:47

ER

A certain car averaged 20 miles per gallon of gasoline on a trip from

605-655 (Medium) | Distance and Speed Problems

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

averagedude23

10 Nov 2023, 10:44

75

6

12,440

by: bumpbot

12 Nov 2025, 08:52

ER

A certain car dealership has two locations. Last month, an average (ar

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Oct 2019, 01:57

11

2

6,374

by: bumpbot

07 May 2026, 03:45

ER

A certain car rental agency rented 25 vehicles yesterday, each of

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

07 Nov 2022, 09:34

2

1

2,074

by: stne

12 Nov 2022, 00:02

ER

A certain car rental agency rented 25 vehicles yesterday, each of whic

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Apr 2015, 04:55

30

11

6,320

by: bumpbot

20 Jul 2025, 17:20

ER

A certain car traveled from one town to another without stopping. What

Sub 505 (Easy) | Distance and Speed Problems

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

GMATBusters

01 Nov 2018, 08:00

6

2

6,065

by: bumpbot

22 Dec 2023, 05:25

ER

A certain car travels 18 miles per gallon of gas on city streets and 3

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

07 Feb 2020, 06:22

9

6

3,526

by: bumpbot

07 Jun 2026, 05:47

ER

A certain carton holds fewer than 50 books. What is the number of book

605-655 (Medium) | Number Properties, Remainders

605-655 (Medium) | Number Properties, Remainders hide tags

nilesh376

17 Apr 2010, 01:52

8

10

10,819

by: Bunuel

06 Oct 2016, 01:29

ER

A certain catering company's cost to cater a dinner for n people is 5

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

guddo

24 Jan 2024, 01:17

87

8

14,851

by: Bunuel

30 Jan 2026, 03:20

ER

A certain charity sold tickets for its annual ball. If $5 of every

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

28 Oct 2015, 07:13

9

7

5,139

by: CareerLauncherIE

18 Oct 2025, 13:24

ER

A certain chef is combining two mixtures to create a soup.

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

14 Oct 2024, 01:30

17

3

2,226

by: bumpbot

20 Apr 2026, 05:19

ER

A certain circle in the xy-plane has its center at the origin. If P is

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

Sallyzodiac

03 May 2016, 07:59

242

18

74,935

by: Bunuel

25 Jan 2024, 08:42

ER

A certain circle in the xy-plane has radius of 2 and has its center at

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

29 Jun 2022, 05:30

1

1,567

by: Aks111

30 Jun 2022, 21:15

ER

A certain circular area has its center at point P and has

555-605 (Medium) | Coordinate Plane, Geometry

555-605 (Medium) | Coordinate Plane, Geometry hide tags

vigneshpandi

21 Sep 2010, 23:05

86

10

20,300

by: bumpbot

24 Sep 2024, 06:17

ER

A certain city owns 298 buses, whose routes are divided into

Poor Quality

Poor Quality hide tags

rxs0005

21 Jun 2011, 07:03

3

19

5,385

by: chetan2u

01 Feb 2016, 10:03

ER

A certain club has 20 members. How many of the members of the club are

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

28 Oct 2015, 07:01

2

4

3,918

by: surah

30 Oct 2023, 22:05

ER

A certain company assigns ID numbers to its new employees such that ea

Poor Quality

Poor Quality hide tags

gmatpapa

19 Apr 2011, 05:42

1

4

3,946

by: Spidy001

20 Apr 2011, 14:27

ER

A certain company consists of three divisions, A, B, and C. Of the emp

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

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

parkhydel

28 Apr 2020, 04:47

186

18

26,763

by: Bunuel

02 Jun 2026, 16:44

ER

A certain company currently has how many employees?

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

justtapas

02 Nov 2012, 23:22

28

4

19,978

by: bumpbot

11 Apr 2026, 03:15

ER

A certain company currently has how many employees?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

27 Jun 2025, 00:30

2

481

by: Dereno

27 Jun 2025, 10:51