GMAT Data Sufficiency (DS) Forum - Free Practice Questions

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

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Bunuel

25 Oct 2022, 08:11

189

15

89,146

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of June 2026

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1, 2

Bunuel

01 Jan 2026, 05:45

872

24

194,291

by: bumpbot

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

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bb

23 Aug 2026, 13:03

1.6k

1

496,316

by: bb

23 Aug 2026, 13:01

ER

After winning 80% of his first 40 matches, Igby won 50

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

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

BN1989

14 Mar 2012, 04:03

72

12

12,706

by: bumpbot

28 Jul 2026, 00:50

ER

An infinite sequence of positive integers is called an "alph

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

Ev123

23 Jul 2014, 05:24

116

16

35,709

by: bumpbot

27 Jul 2026, 21:11

ER

There are exactly 6 teams in league x. What was the total

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

eybrj2

06 Mar 2012, 23:36

133

18

28,239

by: bumpbot

27 Jul 2026, 20:27

ER

The profit from the sale of a certain appliance increases

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

26 Aug 2012, 03:10

72

10

26,310

by: bumpbot

27 Jul 2026, 19:40

ER

A quality-control bin contains 30 sensor chips, some of which are

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Bunuel

19 Jul 2026, 19:00

3

597

by: MarkGMATMentor

27 Jul 2026, 18:25

Georges Gas Station gets fuel from two different fuel suppliers

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

19 Jan 2026, 03:45

13

4

921

by: egmat

27 Jul 2026, 11:18

ER

In how many ways can a coach select a 4-person university team from a

505-555 (Easy) | Combinations +2 tags

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

1, 2

pate13

24 Aug 2015, 17:49

67

22

16,411

by: SlowtoBoot

27 Jul 2026, 07:10

Gayle purchased two items, X and Y, which were both on sale. If the

655-705 (Hard) | Percent and Interest Problems

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

Bunuel

22 Nov 2023, 02:30

6

2

1,757

by: bumpbot

27 Jul 2026, 06:31

ER

In a certain class, some students donated cans of food to a local food

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

28 May 2026, 09:36

28

8

21,052

by: bumpbot

27 Jul 2026, 00:51

ER

Team A and Team B have the same numbers of players on them.

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

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

MartyMurray

07 Mar 2026, 09:19

19

2

2,689

by: MrMaxMan

26 Jul 2026, 19:48

ER

List S and list T each contain 5 positive integers, and for each list

505-555 (Easy) | Statistics and Sets Problems

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

alimad

20 Oct 2019, 01:18

37

7

18,353

by: GulfTube

26 Jul 2026, 06:15

There are five homes. If the median price of a home is $200,000

705-805 (Hard) | Min-Max Problems, Statistics and Sets Problems

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

itisSheldon

28 Mar 2018, 07:18

81

8

11,006

by: GulfTube

26 Jul 2026, 05:21

Joyce has a recipe for a batch of brownies and a recipe for a coffee

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

25 Jul 2026, 19:00

1

264

by: dhart

26 Jul 2026, 04:15

ER

Do at least 60 percent of the students in Pats class walk to school?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

21 Oct 2015, 21:43

68

10

30,870

by: manupoonia

26 Jul 2026, 04:08

ER

GMAT Club World Cup 2026 (Day 8): Maya, Felix, and Nora painted

705-805 (Hard) | Work and Rate Problems

705-805 (Hard) | Work and Rate Problems hide tags

1, 2, 3, 4

Bunuel

15 Jul 2026, 08:00

71

69

1,362

by: DhanyaAbhirami

26 Jul 2026, 03:22

ER

How long, in minutes, did it take a bicycle wheel to roll along a flat

555-605 (Medium) | Distance and Speed Problems, Geometry

555-605 (Medium) | Distance and Speed Problems, Geometry hide tags

enigma123

01 Apr 2012, 16:39

39

11

13,872

by: bumpbot

26 Jul 2026, 03:11

ER

A jar has 10 marbles, a mix of red and white. Two marbles are randomly

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

Bunuel

24 Apr 2026, 11:42

36

7

8,295

by: bumpbot

25 Jul 2026, 23:29

ER -1

Is f(pq) = f(p) * f(q) for all positive integers values of p and q?

655-705 (Hard) | Functions and Custom Characters

655-705 (Hard) | Functions and Custom Characters hide tags

Pritishd

20 Sep 2020, 08:10

20

5

5,607

by: bumpbot

25 Jul 2026, 23:04

An n-sided die has sides labeled with the numbers 1 through n

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Bunuel

08 Apr 2025, 00:30

13

6

1,755

by: bumpbot

25 Jul 2026, 14:45

A total of $100,000 was invested in one year. A part of this amount ea

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

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

siddharthkapoor

15 Jul 2020, 09:12

14

4

3,236

by: bumpbot

25 Jul 2026, 12:18

ER

At a certain company, 30 percent of the employees live in City R. If 2

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

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

Bunuel

23 May 2020, 06:33

34

6

14,013

by: Usernamevisible

25 Jul 2026, 11:12

ER

Esther bought a computer at a price of p dollars, and she paid a sales

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

21 Apr 2024, 08:45

59

9

10,122

by: Usernamevisible

25 Jul 2026, 10:35

ER

Lee has three separate savings accounts. What is the total amount of

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

guddo

24 Jan 2024, 01:33

81

9

10,725

by: bumpbot

25 Jul 2026, 09:53

ER

In a locker room each row of lockers has the same number of lockers

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

guddo

24 Jan 2024, 23:52

24

6

6,973

by: bumpbot

25 Jul 2026, 09:48

Alan and Sue have each been saving one dollar a day and will continue

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

gmatt1476

21 Sep 2019, 16:30

74

9

14,989

by: bumpbot

25 Jul 2026, 09:37

ER

A paint mixture was formed by mixing exactly 3 colors of paint. By vol

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

Bunuel

26 Apr 2019, 03:18

323

17

48,377

by: MANASH94

25 Jul 2026, 08:18

ER

If the average (arithmetic mean) of four positive numbers is

705-805 (Hard) | Arithmetic, Statistics and Sets Problems

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

rxs0005

01 Dec 2010, 04:24

40

7

9,568

by: bumpbot

25 Jul 2026, 06:22

For a lottery ticket, Emily chose six numbers with an average of 10.

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

12 Mar 2023, 10:03

4

2

1,270

by: bumpbot

25 Jul 2026, 06:14

How many digits does integer x have?

655-705 (Hard) | Fractions and Ratios, Number Properties

655-705 (Hard) | Fractions and Ratios, Number Properties hide tags

Bunuel

13 Dec 2016, 11:10

7

3

4,208

by: GulfTube

25 Jul 2026, 05:41

ER

State X has a sales tax rate of k percent on all purchases and State Y

555-605 (Medium) | Percent and Interest Problems

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

gmatt1476

21 Sep 2019, 16:40

68

10

14,414

by: bumpbot

25 Jul 2026, 02:43

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

69

14

18,961

by: bumpbot

25 Jul 2026, 02:39

ER

Two workers, Ava and Ben, are hired to mow a field at a community park

655-705 (Hard) | Work and Rate Problems

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

Bunuel

19 Jul 2026, 19:00

8

2

527

by: Bunuel

25 Jul 2026, 01:00

[x] is the greatest integer less than or equal to x, eg, [1.5]=1. [m]=

505-555 (Easy) | Functions and Custom Characters

505-555 (Easy) | Functions and Custom Characters hide tags

siddharthkapoor

09 Oct 2020, 23:20

4

2

1,615

by: bumpbot

24 Jul 2026, 20:13

ER

Megacorp International spent a total of $90,000,000 on television

505-555 (Easy) | Percent and Interest Problems, Word Problems

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

Bunuel

23 Jul 2026, 19:00

1

2

357

by: MarkGMATMentor

24 Jul 2026, 18:18

ER

Price of a Belgian chocobar has increased by x percent but the number

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

05 Nov 2024, 01:45

11

3

1,783

by: MarkGMATMentor

24 Jul 2026, 17:23

ER

Saul invests an amount of dollars in investment A at i% simple annual

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

26 Jul 2026, 06:11

32

9

7,310

by: bumpbot

24 Jul 2026, 12:51

ER

Every object in a box is either a sphere or a cube, and every object

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

Bunuel

26 Jun 2017, 02:41

67

14

28,351

by: bumpbot

24 Jul 2026, 12:23

ER

Last year, a certain bakerys expenses for manufacturing pretzels were

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

09 Sep 2024, 07:16

13

5

2,619

by: bumpbot

24 Jul 2026, 11:27

ER

If the average (arithmetic mean) of the assessed values of x houses is

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

sondenso

20 Nov 2023, 09:37

84

12

27,515

by: bumpbot

24 Jul 2026, 10:42

ER

Ken bought a shirt at a price of D dollars, to which a sales tax of p

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

nick13

16 Sep 2024, 07:44

100

10

18,007

by: bumpbot

24 Jul 2026, 10:26

ER

33 out of the 47 students in an advanced degree program have a higher

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Bunuel

16 Sep 2015, 07:23

56

5

9,695

by: bumpbot

24 Jul 2026, 10:22

ER

Five boxes together weigh 150 pounds. What is the weight of the

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

13 Mar 2023, 01:30

6

4

2,454

by: bumpbot

24 Jul 2026, 03:54

ER

GMAT Club Olympics 2025 (Day 6): A department store received

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

1, 2...5, 6

Bunuel

07 Jul 2025, 08:00

93

101

3,738

by: bumpbot

24 Jul 2026, 00:51

ER -1

GMAT Club Olympics 2025 (Day 4): A rental firm has only two distinct

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

1, 2...5, 6

Bunuel

03 Jul 2025, 08:00

62

103

4,373

by: bumpbot

24 Jul 2026, 00:47

ER

GMAT Club Olympics 2025 (Day 3): At a summer camp, there are exactly

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

1, 2...5, 6

Bunuel

02 Jul 2025, 08:00

60

112

4,577

by: bumpbot

24 Jul 2026, 00:28

ER

GMAT Club Olympics 2025 (Day 2): Out of 180 gym members, is the number

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

1, 2...8, 9

Bunuel

01 Jul 2025, 08:00

134

163

5,899

by: bumpbot

23 Jul 2026, 23:57

ER

During a sale, a clothing store sold each shirt at a price of $15 and

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

agdimple333

01 May 2011, 13:48

134

10

39,702

by: Virussss

23 Jul 2026, 13:31

ER

Brian works as a consultant. His only work comes from three companies

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

abhiramkrishna

01 May 2026, 10:50

13

6

954

by: FrozenDragon

23 Jul 2026, 11:38

At a two-day seminar, 90 percent of those registered attended the semi

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

TeHCM

17 Dec 2005, 23:41

216

9

56,699

by: bumpbot

23 Jul 2026, 11:38

ER

The table above shows the morning schedule for train X . If Juan took

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

sondenso

01 Nov 2018, 03:41

78

10

22,961

by: bumpbot

23 Jul 2026, 10:55