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

79,579

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

858

24

188,960

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

488,641

by: bb

29 Aug 2025, 13:27

ER

Is a < b < c ? (1) a - 1 < b < c + 1 (2) a + 1 < b < c - 1

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

08 Jun 2023, 04:15

1

3

1,239

by: Flower_Child

09 Oct 2023, 02:43

ER

Is a < b < c ? (1) a - 1 < b < c + 1 (2) a + 1 < b < c - 1

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

19 Apr 2023, 11:15

4

2

1,234

by: bumpbot

25 Mar 2025, 17:44

ER

Is a < b? (1) |a – b| = b – a (2) a/b < 1

705-805 (Hard) | Algebra, Inequalities

705-805 (Hard) | Algebra, Inequalities hide tags

mahdwen

04 Jun 2017, 14:20

10

2,733

by: bumpbot

04 Jan 2026, 22:21

ER

Is a < b? (1) a^3 = ab (2) |b| > |a|

705-805 (Hard) | Absolute Values +2 tags

705-805 (Hard) | Absolute Values, Algebra, Inequalities hide tags

Bunuel

14 Jun 2018, 21:07

19

7

2,973

by: bumpbot

06 Jun 2023, 05:04

ER

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

705-805 (Hard) | Exponents, Inequalities

705-805 (Hard) | Exponents, Inequalities hide tags

Bunuel

16 Dec 2019, 02:26

13

4

5,624

by: bumpbot

24 Jul 2024, 09:22

ER

Is a < b? (1) |a b| = b a (2) a/b < 1

705-805 (Hard) | Absolute Values, Inequalities

705-805 (Hard) | Absolute Values, Inequalities hide tags

Bunuel

20 Feb 2023, 07:41

1

1,355

by: GMATinsight

20 Feb 2023, 08:24

ER

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

705-805 (Hard) | Exponents, Inequalities

705-805 (Hard) | Exponents, Inequalities hide tags

Bunuel

09 Mar 2016, 13:01

11

5

2,527

by: bumpbot

15 Jul 2023, 04:22

ER

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

705-805 (Hard) | Exponents, Inequalities

705-805 (Hard) | Exponents, Inequalities hide tags

Bunuel

18 Jun 2015, 03:10

13

12

4,842

by: bumpbot

24 Mar 2018, 22:43

ER

Is a + b > 0 ?

555-605 (Medium) | Absolute Values +2 tags

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

shyind

11 Nov 2015, 01:57

7

3,976

by: bumpbot

23 Dec 2023, 01:48

ER

Is a + b > 0? (1) |a| > |b| (2) a < b

605-655 (Medium) | Absolute Values, Inequalities

605-655 (Medium) | Absolute Values, Inequalities hide tags

chetan2u

20 Nov 2017, 10:19

13

7

3,562

by: chetan2u

25 Jan 2021, 22:14

ER

Is a + b > ab? (1) 2 > a (2) b > a

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

28 Jul 2022, 10:30

1

971

by: harshittahuja

28 Jul 2022, 12:16

ER

Is a + b > c + d ?

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

20 Mar 2016, 23:43

6

10,231

by: bumpbot

30 Jun 2025, 12:48

ER

Is a + b > c + d (1) a > c (2) b > d

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

15 Apr 2021, 11:15

2

1,470

by: andreagonzalez2k

15 Apr 2021, 13:25

ER

Is a + b > c + d?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

chetan2u

24 Dec 2017, 04:13

3

2,050

by: hellosanthosh2k2

13 Jan 2018, 11:04

ER

Is a + b > c? (1) a, b, and c represent three different lengths of the

655-705 (Hard) | Geometry, Inequalities

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

Bunuel

06 Apr 2023, 09:45

4

5

1,575

by: Afn24

26 Apr 2023, 01:02

ER

Is a + b < c - d?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

BoomHH

06 Feb 2017, 01:00

6

3

2,211

by: bumpbot

31 Dec 2025, 03:03

ER

Is A + B + C = 0? (1) A = -B (2) B = C

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

04 Dec 2018, 03:07

3

9

3,291

by: Bunuel

11 Oct 2021, 08:23

ER

Is A + B + C = 0? (1) A = -B (2) B = C

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

17 Nov 2022, 13:47

1

847

by: gmatophobia

17 Nov 2022, 14:51

ER

Is a + b + c = 7 ? (1) a + b = 3 (2) b + c = 4

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

01 Jul 2018, 21:03

4

6

2,472

by: bumpbot

16 Nov 2022, 01:02

ER

Is A + B + C even?

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

dimitri92

23 May 2010, 21:31

74

8

20,667

by: bumpbot

23 Aug 2024, 04:40

ER

Is a + b = 0 ? (1) a/b > 1 (2) ab > 1

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

25 May 2022, 02:00

1

983

by: GMATinsight

25 May 2022, 02:13

ER

Is a + b = 0?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

16 Jul 2017, 23:14

3

2,117

by: bumpbot

30 Oct 2022, 09:10

ER

Is a + b = a^2 + b^2? (1) a and b are natural numbers. (2) a > b

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

SukhAgam

26 Feb 2025, 21:21

2

3

1,227

by: Kinshook

28 Feb 2025, 01:22

ER

Is a + b even? (1) a^2 - b^2 is even (2) √a - √b is even

705-805 (Hard) | Exponents, Number Properties

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

GMATinsight

10 Aug 2021, 23:55

4

3

1,586

by: shauryahanda

11 Aug 2021, 12:17

ER

Is a + b positive? (1) The point (a, b) is in Quadrant II (2) a b >0

555-605 (Medium) | Absolute Values +2 tags

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

Bunuel

09 Jun 2022, 01:30

1

1,262

by: zhanbo

09 Jun 2022, 01:55

ER

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

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

Bunuel

19 Dec 2019, 01:53

9

2

2,142

by: bumpbot

24 Jul 2024, 01:53

ER

Is a = 0? (1) ab = -3a (2) b > 0

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

31 May 2023, 06:45

1

913

by: hloonker

01 Jun 2023, 04:34

Is a = 0? (1) ab = 0 (2) a^2 = 0

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Carcass

01 Nov 2018, 05:01

1

3

4,629

by: bumpbot

12 Jul 2024, 03:14

ER

Is a ≠ b ? (1) a^2 > b^2 (2) |a| < b

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

26 Feb 2017, 08:55

4

2,542

by: ScottTargetTestPrep

15 Nov 2022, 17:08

ER

Is a = b ? (1) x = y (2) c = x

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Bunuel

06 Oct 2021, 08:15

3

7

2,076

by: ostrick5465

13 Jul 2022, 09:19

ER

Is a = b ? (1) a^2 = b^2 (2) a = 1

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

30 Jan 2023, 04:43

1

827

by: SaquibHGMATWhiz

30 Jan 2023, 09:33

ER

Is a = b ? (1) a^2 = b^2 (2) a = 1

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

24 Apr 2023, 08:15

1

791

by: Archit3110

24 Apr 2023, 09:54

ER

Is a = b ? (1) a^2 = b^2 (2) a = 2

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

Bunuel

31 Dec 2022, 03:39

1

981

by: gmatophobia

31 Dec 2022, 07:46

ER

Is a = b ? (1) a/b = 3 (2) a = 3b

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

04 Jan 2023, 12:40

1

1,009

by: gmatophobia

04 Jan 2023, 13:18

ER

Is a = b = c = 1? (1) a^2 + b^2 + c^2 = ab + bc + ca (2) a^2 + b^2 =

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

28 Jul 2021, 02:30

3

1

1,489

by: Showmeyaa

28 Jul 2021, 02:47

ER

Is a ≠ b? (1) a < −b (2) a·b > 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

16 May 2021, 21:00

3

1,789

by: SaquibHGMATWhiz

16 Dec 2022, 00:21

ER

Is a = b? (1) |a| = |b| (2) a = 1

505-555 (Easy) | Absolute Values, Algebra

505-555 (Easy) | Absolute Values, Algebra hide tags

Bunuel

14 Sep 2023, 08:45

5

1

1,197

by: unraveled

14 Sep 2023, 09:10

ER

Is a − b > 0? (1) a > 2b (2) b > a + 3

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

30 Jun 2020, 03:11

12

7

4,674

by: bumpbot

25 Oct 2023, 10:57

ER

Is a − b > 9 ? (1) a − √400 > 0 (2) 0 < b − √121

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

09 Jun 2021, 06:00

4

5

2,217

by: bumpbot

10 Feb 2024, 01:54

ER

Is a 3-digit integer divisible by 3?

505-555 (Easy) | Multiples and Factors, Number Properties

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

amijags

10 Aug 2010, 05:48

5

4

3,972

by: bumpbot

14 Aug 2017, 03:07

ER

Is a 3-digit integer divisible by 3?

555-605 (Medium) | Multiples and Factors

555-605 (Medium) | Multiples and Factors hide tags

Bunuel

27 Apr 2022, 05:00

1

1,285

by: JerryAtDreamScore

01 May 2022, 07:48

ER

Is a 5-digit integer abcde divisible by 4? (1) d is an even number

505-555 (Easy) | Multiples and Factors

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

Bunuel

28 Apr 2023, 06:30

1

854

by: ChandlerBong

28 Apr 2023, 07:12

ER

Is a an even integer, if a,b and c are positive integers?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

chetan2u

26 Jan 2018, 07:41

3

11

2,721

by: bumpbot

06 Jan 2023, 10:05

ER

Is a an even integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

09 Feb 2015, 06:35

47

8

6,876

by: bumpbot

02 Feb 2025, 01:36

ER

Is a an integer?

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

ajaanrkhan

23 Aug 2021, 21:14

4

6

3,223

by: omagra

28 Aug 2021, 21:07

ER

Is a an integer?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

JusTLucK04

31 Oct 2014, 13:35

128

17

26,998

by: bumpbot

29 Nov 2024, 05:53

ER

Is A an odd integer?

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

chetan2u

19 May 2016, 22:48

7

2,858

by: syahasa2

09 Oct 2016, 03:13

ER

Is a and b are positive and ab = 1, what is the value of a + b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

huongguyen

12 Sep 2021, 06:29

7

5

1,892

by: bumpbot

05 Apr 2025, 04:13

ER

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

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

26 Aug 2022, 13:30

1

1,092

by: Rabab36

26 Aug 2022, 23:45

ER

Is a certain number p an integer?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

HKD1710

15 Jan 2017, 08:12

1

1,958

by: Bunuel

15 Jan 2017, 08:22