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

176

15

78,588

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

188,442

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

487,796

by: bb

29 Aug 2025, 13:27

ER

Is the product of integers m and n odd?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

avohden

09 Oct 2013, 19:56

3

5

3,580

by: bumpbot

20 Jan 2021, 10:45

ER

Is n^2 an even integer?

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Poor Quality hide tags

avohden

02 Nov 2013, 00:56

14

7

3,948

by: Bunuel

07 Jan 2021, 00:36

ER

At a furniture store, each chair sells for the same price an

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

avohden

09 Oct 2013, 18:17

2

5

3,439

by: Alvarito

29 Apr 2020, 20:03

ER

Is xyz > 0 ? (1) xy + yz > 0 (2) xz > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

avohden

16 Nov 2013, 00:51

4

5,275

by: bumpbot

03 Apr 2019, 05:55

ER

Is the number y between 0.3 and 0.6 ?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

avohden

24 Oct 2013, 17:24

1

4

5,627

by: chetan2u

27 May 2016, 05:56

ER

What is the value of b ?

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

avohden

22 Oct 2013, 22:00

5

3,062

by: Bunuel

01 Dec 2013, 07:21

ER

Is xy > 7 ? (1) x + y = 7 (2) 1 x 3 and 2 y 4

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

avohden

02 Nov 2013, 00:40

3

2

3,662

by: avohden

05 Nov 2013, 22:42

ER

What is the average speed of the car during its entire trip?

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

AweSome777

10 Jul 2019, 07:25

14

10

6,461

by: bumpbot

15 Aug 2025, 21:36

ER

Does the population of rats in a zoo double every day?

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Poor Quality hide tags

AweSome777

10 Jul 2019, 04:59

1

5

2,101

by: v12345

02 Aug 2021, 00:50

ER

Three employees, A, B and C, clean a certain conference room each day.

805+ (Hard) | Work and Rate Problems

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

Awli

26 Feb 2015, 11:36

176

12

13,831

by: bumpbot

10 Mar 2026, 23:27

ER

If y^c = y^d+1 , what is the value of y?

655-705 (Hard) | Exponents

655-705 (Hard) | Exponents hide tags

Awli

09 Dec 2018, 09:31

29

15

5,773

by: bumpbot

02 Oct 2024, 14:11

ER

Is a > b^2 ? (1) a>b^4 (2) a> b^(1/2)

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Awli

08 Aug 2017, 04:08

35

10

4,567

by: bumpbot

23 Oct 2023, 16:04

ER

Is x > 0 ? (1) x^3 < x^4 (2) x^3 < x^5

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Awli

13 Apr 2015, 10:54

13

6

3,930

by: bumpbot

22 Sep 2023, 19:50

ER

In the figure above, is RS || PQ?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Awli

26 Feb 2015, 11:21

14

7

5,481

by: bumpbot

19 Mar 2019, 14:39

ER

In the figure above, ST=3. What is the length of RS?

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Poor Quality hide tags

Awli

26 Feb 2015, 11:24

6

4

2,801

by: KarishmaB

23 Mar 2015, 22:25

ER

If x is a positive integer, is x^2 - 1 divisible by 24?

705-805 (Hard) | Number Properties, Remainders

705-805 (Hard) | Number Properties, Remainders hide tags

axezcole

25 Apr 2019, 01:45

11

8

4,950

by: Bunuel

30 Apr 2025, 00:25

ER

M and N are two positive integers and each of them has 20 factors. If

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

axezcole

21 Apr 2019, 07:37

33

7

5,788

by: bumpbot

08 Jan 2025, 02:55

ER

Is |x| < 1?

705-805 (Hard) | Absolute Values

705-805 (Hard) | Absolute Values hide tags

Aximili85

29 Aug 2012, 10:11

1

4

4,731

by: Bunuel

30 Aug 2012, 01:48

ER

Set S consists of 20 different positive integers. How many

505-555 (Easy) | Statistics and Sets Problems

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

axl169

10 Oct 2006, 09:04

22

9

15,170

by: bumpbot

10 Jul 2024, 22:29

ER

Is |x| ≤ 4 ? |x + 2| + |x − 4| > 2|x − 1| |(x + 4)(x − 3)| > 8

805+ (Hard) | Absolute Values, Inequalities

805+ (Hard) | Absolute Values, Inequalities hide tags

Ayush1692

22 Mar 2018, 03:12

44

10

5,303

by: bumpbot

22 Oct 2024, 05:38

-3

In Country X and Country Y, lunch for the vast majority of high...

705-805 (Hard) | Non-Math Related

705-805 (Hard) | Non-Math Related hide tags

az168

25 Dec 2025, 02:48

8

2

1,146

by: Dream009

29 Dec 2025, 11:59

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

15,107

by: bumpbot

07 Jan 2026, 10:55

ER

In the rectangular coordinate system, lines m and n cross at

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

b00gigi

23 Sep 2013, 16:36

21

5

9,077

by: bumpbot

21 Mar 2023, 06:49

ER

If a and b are positive numbers, what are the coordinates of

Sub 505 (Easy) | Coordinate Plane

Sub 505 (Easy) | Coordinate Plane hide tags

b14kumar

27 Jul 2014, 15:57

109

8

46,257

by: bumpbot

07 Oct 2025, 01:21

ER

If A, B and C are digits and AB 0, what is the value of B?

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

babusona

31 Jan 2023, 12:55

84

11

20,830

by: Reetisha

18 Dec 2025, 22:53

ER

What is the two-digit positive integer whose tens digit is a

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

babusona

08 Mar 2012, 08:57

30

5

10,962

by: bumpbot

28 Aug 2025, 09:14

ER

Does p^2 = q if p is a prime number?

655-705 (Hard) | Algebra, Number Properties

655-705 (Hard) | Algebra, Number Properties hide tags

babusona

26 Apr 2016, 07:26

9

11

8,591

by: bumpbot

07 Sep 2020, 01:10

ER

Of the shares of stock owned by a certain investor, 30

505-555 (Easy) | Algebra, Word Problems

505-555 (Easy) | Algebra, Word Problems hide tags

BabySmurf

25 Jan 2014, 02:16

190

7

55,300

by: bumpbot

28 Mar 2026, 07:47

ER

If positive integer y is equal to the sum of all the unique

655-705 (Hard) | Absolute Values, Number Properties

655-705 (Hard) | Absolute Values, Number Properties hide tags

BabySmurf

23 Jan 2014, 13:59

49

10

8,019

by: bumpbot

23 Sep 2025, 14:52

ER

In the xy plane, line x goes through the point (a,1) and lin

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

BabySmurf

04 Jan 2023, 05:31

101

10

13,741

by: Bunuel

23 Sep 2025, 08:33

ER

If ab < 7, is b < 1?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

BabySmurf

17 Jan 2014, 04:25

5

3

5,292

by: bumpbot

10 Aug 2023, 12:10

ER

Is |x + y| < |x| + |y|? (1) |x| ≠ |y| (2) |x – y| > |x + y|

555-605 (Medium) | Absolute Values, Inequalities

555-605 (Medium) | Absolute Values, Inequalities hide tags

BabySmurf

05 Feb 2019, 04:35

80

8

9,072

by: bumpbot

04 Aug 2022, 00:53

ER

Is positive integer x divisible by 24?

605-655 (Medium) | Multiples and Factors

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

BabySmurf

23 Jan 2014, 13:50

113

10

21,786

by: rvgmat12

30 Jan 2022, 04:59

ER

If a certain culture of bacteria increases by a constant

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

bagdbmba

29 Aug 2025, 06:07

99

14

28,553

by: Bunuel

29 Aug 2025, 06:12

ER

Is (a - k)/(b - k) > (a + k)/(b + k) ? (1) a > b > k (2) k > 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

bagdbmba

31 Jul 2013, 10:50

33

12

7,057

by: bumpbot

07 Oct 2024, 20:22

ER

Is a < 0 ? (1) a^3 < a^2 + 2a (2) a^2 > a^3

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

1, 2

bagdbmba

19 Jun 2019, 07:14

37

22

9,924

by: bumpbot

03 Oct 2024, 23:48

ER

Is x=1?

705-805 (Hard) | Fractions and Ratios

705-805 (Hard) | Fractions and Ratios hide tags

bagdbmba

18 Jun 2013, 09:16

48

3

5,139

by: Bunuel

22 Sep 2020, 01:01

ER

What is the value of |y|?

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

bagdbmba

24 Jun 2013, 06:10

2

3,510

by: madn800

04 Jun 2014, 19:20

ER

All boxes in a certain warehouse were arranged in stacks of 12 boxes

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

baharalipour

28 Apr 2016, 09:46

462

18

51,621

by: bumpbot

28 Jun 2025, 09:35

ER

Harvey teaches a certain number of biology students in 2

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

bakfed

12 May 2010, 07:23

40

8

15,555

by: bumpbot

07 Jul 2025, 08:21

ER

Sn=S(n-2) + 11, is 633 a term of the sequence?

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

bakshiaashna

07 Nov 2020, 14:29

13

3

3,995

by: bumpbot

21 Dec 2025, 23:17

ER

Is quadrilateral a square?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

balas

03 Apr 2012, 07:27

22

8

12,830

by: bumpbot

24 Feb 2023, 08:32

ER

If n is a positive integer, is n^3 n divisible by 4 ?

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

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

1, 2

bambazoon

18 Aug 2009, 08:53

247

21

54,290

by: bumpbot

28 Mar 2025, 10:00

ER

A list contains 7 positive integers

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

bambinobirbante

14 Dec 2022, 02:13

6

3

3,708

by: luisdicampo

15 Apr 2026, 07:46

ER

What is the probability that event E or event F or both will

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

banksy

01 Mar 2011, 10:57

67

19

27,259

by: bumpbot

09 Feb 2026, 23:04

ER

If a bottle is to be selected at random from a certain

Sub 505 (Easy) | Probability

Sub 505 (Easy) | Probability hide tags

banksy

26 Feb 2011, 17:42

8

2

12,345

by: bumpbot

28 Jan 2026, 13:21

ER

p and q are integers. If p is divisible by 10^q and cannot

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

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

banksy

29 Oct 2013, 06:22

294

12

29,459

by: bumpbot

09 Jan 2026, 08:17

ER

If x is an integer, what is the value of x?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

banksy

24 Feb 2011, 13:47

49

6

16,124

by: bumpbot

08 Jan 2026, 08:57

ER

What is the rate, in cubic feet per minute, at which water

605-655 (Medium) | Work and Rate Problems

605-655 (Medium) | Work and Rate Problems hide tags

banksy

26 Feb 2011, 17:43

39

7

15,471

by: bumpbot

15 Nov 2025, 11:55

ER

Each of 30 parents chose one of five days from Monday throug

705-805 (Hard) | Arithmetic

705-805 (Hard) | Arithmetic hide tags

banksy

14 Mar 2011, 16:31

25

6

7,061

by: HarshG7

20 Sep 2025, 02:48