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

179

15

79,264

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

188,859

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

488,483

by: bb

29 Aug 2025, 13:27

ER

Is ab > 0? (1) abc < 0 (2) b^2c < 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

GMATinsight

05 Apr 2021, 00:30

4

1,481

by: KSBGC

06 Apr 2021, 11:54

ER

Is ab > 0? (1) 1/a < 1 (2) b^3c^2 > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

27 Nov 2019, 01:46

3

4

1,301

by: Rishbha

04 Dec 2019, 07:50

ER

Is ab > 0? (1) b*a^4 > 0 (2) b + a^3 > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

TheUltimateWinner

08 Mar 2019, 00:35

3

2,111

by: bumpbot

10 Dec 2020, 05:08

ER

Is ab > 11? (1) a < 6 and b < 2 (2) a/b > 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

10 Dec 2017, 01:08

2

1,783

by: bumpbot

05 May 2019, 00:39

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Is ab > 2?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

14 Aug 2016, 07:09

1

2

2,089

by: laddaboy

23 Mar 2017, 17:43

ER

Is ab > 35? (1) -4 < a < 3 and -5< b<4. (2) a < 5 and b <7.

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

31 Oct 2017, 23:05

1

1,683

by: Alexey1989x

01 Nov 2017, 01:43

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Is ab > a/b , where a and b are non-zero numbers ? (1) 0 < a < b < 1

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

17 Nov 2021, 06:00

1

1,308

by: Anurocks1233

17 Nov 2021, 06:53

ER

Is ab > bc? (1) abc = 0 (2) a > c

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

18 Sep 2023, 08:45

1

3

1,302

by: bumpbot

08 Jun 2025, 03:45

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Is ab > cd ? (1) a > c (2) b > d

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

03 Mar 2023, 02:30

2

1

1,198

by: $!vakumar.m

03 Mar 2023, 04:56

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Is ab < 0 ? (1) a = b - 6 (2) b < 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

28 Oct 2015, 07:18

8

3,740

by: bumpbot

08 Oct 2019, 09:17

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Is ab < 0? (1) a^4b^9c^2 < 0 (2) a(bc)^6 > 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

12 Jul 2017, 01:06

9

7

5,211

by: Goncalo13072001

26 Feb 2023, 17:22

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Is ab < 0? (1) ab^2 < b^2 (2) b^2 < b

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

13 Sep 2017, 21:44

7

6

4,186

by: bumpbot

14 Nov 2023, 13:29

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Is ab < 0? (1) a^4b^9c^2 < 0 (2) a(bc)^6 > 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

18 Nov 2019, 02:00

5

2,475

by: bumpbot

24 Oct 2023, 06:15

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Is ab < 1/ab? (1) ab > 0 (2) b < 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

09 Jun 2023, 08:15

1

4

1,468

by: Gauravji21

10 Jun 2023, 20:59

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Is ab < 12? (1) a < 3 and b < 4 (2) 1/3 < a < 2/3 and b^2< 169

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

11 Jan 2015, 12:41

8

9

4,589

by: bumpbot

18 Feb 2022, 12:33

ER

Is ab < 8 ? (1) a < 4 and b < 3 (2) a^3 < 8 and b - 4 = 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

09 Feb 2022, 05:30

1

3

1,358

by: Bunuel

17 Feb 2022, 15:15

ER

Is ab < 9 ? (1) a < 2 and b < 4 (2) 1/5 < a < 3/4 and b^2 < 121

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

23 May 2018, 08:39

1

2

1,805

by: bumpbot

18 Feb 2022, 12:32

ER

Is ab < a ? (1) a = 0 (2) b = 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

29 Dec 2022, 09:00

1

765

by: VoxNihili

29 Dec 2022, 23:49

ER

Is ab < a? (1) a = 0 (2) b = 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

04 Aug 2021, 09:00

2

5

1,985

by: adhya9

16 Aug 2021, 18:10

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Is ab + cd > 0 ? (1) ac + bd 0 (2) bc + ad 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

08 Jan 2023, 02:43

1

2

1,486

by: bumpbot

03 Jul 2024, 23:08

ER

Is ab + cd > 0 ? (1) ac + db > 0 (2) ad + bc > 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

01 Dec 2022, 02:59

5

2

1,826

by: bumpbot

08 Jun 2025, 10:49

Is ab = 12 ? (1) a^2 + b^2 = 25 (2) 4a = 3b

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

TheUltimateWinner

25 May 2019, 09:24

1

3

1,325

by: Smeeta

28 May 2019, 01:13

ER

Is ab = 9c^2–4?

505-555 (Easy) | Multiples and Factors

505-555 (Easy) | Multiples and Factors hide tags

Bunuel

12 Feb 2015, 07:07

21

13

6,652

by: bumpbot

25 May 2023, 16:03

ER

Is AB || CD? (1) AC = BD (2) AB = CD

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

BrentGMATPrepNow

18 Jun 2018, 08:12

10

3

3,478

by: bumpbot

11 Apr 2024, 06:13

ER

Is ab 0? (1) |a + b| = a b (2) a^3 = b^5

655-705 (Hard) | Absolute Values, Algebra

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

Bunuel

17 Nov 2021, 03:30

8

4

3,115

by: bumpbot

20 Apr 2023, 06:19

ER

Is ab a prime number?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

07 Oct 2015, 06:34

19

5

9,669

by: masoomjnegi

20 Dec 2018, 03:37

ER

Is ab negative? (1) ab^8 < 0 (2) a + b^8 = 12

555-605 (Medium) | Exponents, Inequalities

555-605 (Medium) | Exponents, Inequalities hide tags

Bunuel

07 May 2018, 02:51

4

5

2,197

by: dharde9

13 Jun 2018, 14:26

ER

Is ab odd? (1) a is even (2) a is an integer

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

BillyZ

21 Mar 2017, 18:21

30

9

6,766

by: bumpbot

09 Mar 2024, 09:06

ER

Is AB parallel to CD?

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

07 Feb 2018, 21:18

5

3

3,203

by: bumpbot

31 May 2020, 06:09

ER

Is ab positive?

Poor Quality

Poor Quality hide tags

ashwink

08 Mar 2017, 06:04

4

8

6,413

by: ScottTargetTestPrep

15 Mar 2017, 16:24

ER

Is ab(b - 4) a positive integer?

505-555 (Easy) | Algebra, Number Properties

505-555 (Easy) | Algebra, Number Properties hide tags

Bunuel

30 Oct 2019, 02:17

1

2

1,488

by: BrentGMATPrepNow

30 Oct 2019, 07:32

ER

Is ab<1? (1) a^2b<a (2) ab^2<b

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

GMATNinja

18 Apr 2022, 00:26

16

7

6,868

by: bumpbot

13 May 2024, 01:27

ER

Is ab+c an odd integer, if a, b and c are positive integers? (1) c is

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

chetan2u

10 Jul 2018, 20:32

6

5

1,944

by: KSBGC

07 Aug 2018, 14:48

ER

Is AB=10 the shortest side of triangle ABC? (1) The perimeter of ABC

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

04 May 2023, 01:30

4

1

987

by: stne

05 May 2023, 08:21

ER

Is abc < 0?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

GMATBusters

15 Feb 2020, 19:32

3

11

2,249

by: bM22

16 Feb 2020, 07:04

ER

Is abc = 0? (1) a^2 + b^2 + c^2 = 0 (2) a + b + c = 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

TheUltimateWinner

02 Apr 2021, 11:16

1

3

1,761

by: Bunuel

27 Apr 2021, 00:28

ER

Is abc = 0? 1) a^2 = 2a

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

misterJJ2u

10 Jan 2008, 00:13

1

5,567

by: Bunuel

26 Oct 2023, 09:00

ER

Is abc = 1 ? (1) a = 1/b (2) b = 1/c

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

07 Dec 2022, 02:30

1

1,251

by: chetan2u

07 Dec 2022, 08:00

ER

Is abc = 2?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

13 Nov 2014, 09:40

6

5

4,363

by: manojach87

12 Jul 2016, 18:35

ER

Is ABC a right triangle?

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

smartyman

24 Jun 2014, 07:59

14

4

6,012

by: bumpbot

10 Jan 2024, 08:30

ER

Is ABC a right triangle? AB = 5; AC = 4. (1) BC = 3 (2) AC = CD

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Bunuel

05 Nov 2017, 02:02

8

6

3,572

by: bumpbot

01 Jan 2022, 07:05

ER

Is ABC an equilateral triangle? (1) BD/AD = DC/DB (2) AB^2 + CD^2 =

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

18 Jul 2019, 23:57

6

1

2,077

by: saukrit

21 Jul 2019, 00:07

ER

Is ABC an isosceles triangle? (1) AD = DC (2) The area of ABD

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

25 Mar 2022, 01:30

1

3

2,698

by: Nidzo

01 Apr 2022, 08:27

ER

Is abc at least 4?

655-705 (Hard) | Algebra, Inequalities

655-705 (Hard) | Algebra, Inequalities hide tags

fskilnik

08 Feb 2019, 08:02

3

1,468

by: fskilnik

08 Feb 2019, 14:26

ER

Is abc/d an integer if a, b, c, and d are positive integers? (1) (a +

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Kritisood

19 Jul 2020, 08:29

16

10

5,966

by: bumpbot

01 Nov 2024, 23:26

ER

Is ABCD a parallelogram? (1) AB = CD (2) AB is parallel to CD

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

05 Nov 2017, 01:34

3

2

3,494

by: mkdir

13 Sep 2018, 10:54

ER

Is ABCD a rectangle?

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Boochan

01 Jun 2022, 10:50

2

1

1,396

by: SaquibHGMATWhiz

02 Jun 2022, 04:02

ER

Is ABCD a rectangle? (1) ∠ADC = 90° (2) AD = BC

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

02 Aug 2018, 01:33

5

4

4,531

by: bumpbot

03 Sep 2019, 06:32

ER

Is ABCD a rectangle? (1) The perimeter of ABCD is equal to twice the

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

Bunuel

29 Jun 2020, 02:55

15

7

4,932

by: bumpbot

25 Aug 2023, 10:55

ER

Is ABCD a Rombus 1 ABCD is a Square 2. ABCD diagonals bisect

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

1, 2

rxs0005

23 Jul 2010, 06:03

48

21

15,713

by: bumpbot

23 Sep 2023, 07:43