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

79,256

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

188,852

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

488,477

by: bb

29 Aug 2025, 13:27

ER

Is mn < 0?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

18 Apr 2016, 01:00

1

3

3,469

by: bumpbot

07 Sep 2021, 09:57

ER

Is mn < 100? (1) m < 2 (2) n < 5

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

23 Jan 2021, 09:45

3

4

1,240

by: Archit3110

24 Jan 2021, 08:17

ER

Is mn < 11? (1) m + n = 7 (2) 5 ≥ m ≥ 3 and 4 ≥ n ≥ 2

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

19 Jul 2018, 00:06

2

1,290

by: Akash720

19 Jul 2018, 02:31

ER

Is mn < m/n ? (1) mn is a positive integer (2) n is a negative number

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

13 Apr 2022, 07:00

9

4

3,946

by: bumpbot

10 Nov 2025, 15:06

ER

Is MN Odd?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

thevenus

11 Oct 2012, 00:13

1

5

3,485

by: bumpbot

20 Jan 2021, 10:43

ER

Is mn<10?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Srav

11 Oct 2015, 00:23

64

12

13,857

by: bumpbot

29 Oct 2024, 23:17

ER

Is MNO a right triangle?

505-555 (Easy) | Geometry

505-555 (Easy) | Geometry hide tags

Bunuel

05 Mar 2019, 05:13

3

6

3,850

by: bumpbot

14 Feb 2023, 08:08

ER -1

Is MNP isosceles? (1) Exactly two of the angles, M and N, have the

Sub 505 (Easy) | Geometry

Sub 505 (Easy) | Geometry hide tags

GMATBusters

14 Nov 2018, 09:39

27

8

14,432

by: Legend2k23

25 Jan 2026, 13:27

ER

Is mp greater than m?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

GetThisDone

10 Oct 2012, 11:09

60

19

15,404

by: Bunuel

07 Nov 2025, 06:25

ER

Is mx < m + x? (1) 0 < x < 1. (2) m is a positive integer.

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

18 Apr 2022, 01:30

3

2

1,340

by: bumpbot

10 Aug 2024, 12:21

ER

Is n > 0 ? (1) n > -1 (2) |1 + n| > |n - 3|

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

21 Apr 2023, 08:15

2

1,348

by: nasgmatbag

01 May 2023, 05:36

ER

Is N > 10 ? (1) |N| > 10 (2) N^2 > 100

Sub 505 (Easy) | Absolute Values, Inequalities

Sub 505 (Easy) | Absolute Values, Inequalities hide tags

Bunuel

25 Oct 2022, 10:11

3

1

1,413

by: Sawadhesh21

25 Oct 2022, 11:30

ER

Is N > 5 ? (1) |N| > 5 (2) N^3 > 125

Sub 505 (Easy) | Absolute Values, Inequalities

Sub 505 (Easy) | Absolute Values, Inequalities hide tags

Bunuel

25 Oct 2022, 13:14

3

1

1,789

by: Lenel

10 Jan 2023, 20:44

ER

Is n > 5? (1) The median of the set {2, 1, 5, 8, n} is greater than

555-605 (Medium) | Statistics and Sets Problems

555-605 (Medium) | Statistics and Sets Problems hide tags

Bunuel

12 Apr 2022, 01:30

1

3

1,267

by: Boho

12 Apr 2022, 05:29

ER

Is n > 6? (1) n > 2.5 (2) n > 37

505-555 (Easy) | Inequalities, Roots

505-555 (Easy) | Inequalities, Roots hide tags

gmatprep2011

29 Jul 2012, 00:18

54

19

18,759

by: bumpbot

06 Apr 2025, 00:33

ER

Is n > m ? (1) 7n > 9m (2) |n/m| > 1

705-805 (Hard) | Absolute Values, Inequalities

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

PrepTap

28 May 2022, 03:26

29

15

9,443

by: bumpbot

20 Jan 2024, 05:27

ER

Is n < 0 (1) -n = |-n| (2) n^2 = 16

655-705 (Hard) | Absolute Values, Inequalities

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

Bunuel

13 Oct 2021, 01:30

19

5

4,826

by: bumpbot

02 Jun 2025, 15:59

ER

Is n < 0 ? (1) m < n (2) -n < m

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

nayasnayas

17 Apr 2022, 02:04

11

7

14,800

by: RastogiSarthak99

06 Jun 2022, 05:06

ER

Is n < 0 ? (1) n - 1 < 0 (2) |3 - n| > |n + 5|

555-605 (Medium) | Absolute Values, Inequalities

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

MathRevolution

29 Jan 2018, 04:29

4

2,635

by: ccooley

31 Jan 2018, 13:04

ER

Is n < 0? (1) 1/n < 0 (2) n^2 > 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

19 Apr 2017, 01:54

2

3

2,068

by: LeoN88

22 Mar 2020, 08:57

ER

Is n < 0? (1) m < n (2) -n < m

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

26 Sep 2019, 04:44

13

9

6,707

by: bumpbot

31 Aug 2025, 22:29

ER

Is N < 7 ? (1) |N| < 7 (2) N^2 < 49

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

25 Oct 2022, 09:51

2

1

1,192

by: gmatCuck

25 Oct 2022, 11:15

Is n = 0? (1) n! = 1 (2) n^2 = n^3 = n^5

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

fitzpratik

21 Oct 2018, 19:12

2

1,620

by: bumpbot

25 Oct 2023, 21:25

ER

Is n = 2m + 3? (1) (n - 3)^2 = 4m^2 (2) n^2 = 4m^2 + 12m + 9

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Abhi077

28 Sep 2018, 11:31

6

10

3,599

by: HWPO

12 Jul 2023, 12:16

ER

Is n a multiple of 6? 1) 3n has twice as many factors as n has 2) 2n

705-805 (Hard) | Multiples and Factors

705-805 (Hard) | Multiples and Factors hide tags

GMATinsight

25 Jun 2017, 00:31

16

5

3,113

by: sk1999

18 Jun 2025, 12:07

Is n a positive number? (1) 2n + 8 ≥ 4 (2) 4n < 3n

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

SalahT

04 Aug 2021, 08:55

1

955

by: SalahT

04 Aug 2021, 08:55

ER

Is n an even integer ? (1) 3n is even (2) 5n is even

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

18 May 2023, 09:30

4

3

1,405

by: bumpbot

10 Jul 2025, 17:42

Is n an even integer? 1) n/6 is an odd integer 2) n+5 is an odd intege

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

TheUltimateWinner

03 Nov 2020, 11:06

3

2,002

by: Happysumit007

20 Jan 2025, 12:02

ER

Is n an even number?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

01 Oct 2023, 05:15

2

1,963

by: DanTheGMATMan

02 Oct 2023, 17:17

ER

Is n an even number? (1) n^2 = n (2) n^3 = n

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

anceer

13 Oct 2023, 00:25

7

2

4,577

by: bumpbot

12 Oct 2023, 02:56

ER

Is n an even number? (1) n(n + 1)/2 is an even number (2) n(n + 2) is

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

18 May 2023, 06:30

1

919

by: gmatophobia

18 May 2023, 12:47

ER

Is n an integer greater than 14?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

adkikani

08 Feb 2024, 01:11

5

6,223

by: kungfury42

17 Feb 2022, 11:07

ER

Is n an integer greater than 4?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

30 Sep 2022, 14:12

20

6

16,170

by: bumpbot

02 Sep 2025, 10:03

ER

Is n an integer less than 5?

555-605 (Medium) | Inequalities, Number Properties

555-605 (Medium) | Inequalities, Number Properties hide tags

Bunuel

02 Oct 2015, 01:53

21

11

10,870

by: bumpbot

15 Nov 2023, 17:50

ER

Is n an integer?

555-605 (Medium) | Multiples and Factors

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

Bunuel

26 Aug 2022, 05:30

1

1,013

by: gmatophobia

26 Aug 2022, 08:56

ER

Is n an integer?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

broall

12 Apr 2017, 22:08

7

6

3,095

by: bumpbot

19 Oct 2024, 21:07

ER

Is N an integer? (1) 2N is an integer (2) 5N is an integer

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

divyajoshi12

09 Sep 2018, 09:19

46

6

17,385

by: bumpbot

08 Sep 2025, 01:43

ER

Is n an integer? (1) 2n is an integer. (2) 3n is an integer.

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

ts2014

29 Sep 2020, 01:27

46

19

19,333

by: bumpbot

15 Sep 2024, 21:50

ER

Is n an integer? (1) 3n^2 is an integer.

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

21 Aug 2019, 03:08

6

7

2,877

by: Cowtommi

23 Sep 2024, 15:50

ER

Is n an integer? (1) n/3 is an integer (2) 2n is an integer

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

TheGmatTutor

22 Jun 2010, 16:16

2

4,014

by: surah

30 Oct 2023, 22:08

ER

Is n an integer? (1) 2n is an integer (2) 1/n is an integer

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

30 Mar 2023, 02:45

3

2

1,478

by: bumpbot

16 May 2025, 11:45

ER

Is n an integer? (1) 2n is an integer. (2) n/2 is an integer

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Carcass

02 Nov 2018, 03:43

4

2

5,463

by: MathRevolution

31 Dec 2019, 20:31

ER

Is n an integer? (1) 3n is an integer (2) 4n is an integer

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

02 Oct 2023, 08:15

3

2

1,355

by: DanTheGMATMan

02 Oct 2023, 10:58

ER

Is n an integer? (1) 3n is an integer (2) n^(1/2) is an integer

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

12 Jul 2023, 01:30

2

1,342

by: 8.toastcrunch

12 Jul 2023, 02:30

ER

Is n an integer? (1) n^2 is an integer (2) n^(1/2) is an

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

vwjetty

29 Jun 2017, 11:40

198

17

36,603

by: rak08

11 May 2025, 22:12

ER

Is n an integer? (1) n^3 + 3n is an integer. (2) n^4 + 4n is

Poor Quality

Poor Quality hide tags

h2polo

20 Apr 2010, 13:28

5

6

5,554

by: h2polo

20 Apr 2010, 18:25

Is n an odd integer? (1) 2n is an even integer. (2) 2n 1 is an odd

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

SalahT

03 Aug 2021, 20:12

1

1,679

by: rajatchopra1994

03 Aug 2021, 20:17

ER

Is n divisible 35? 1) 4n^2/15 = Integer 2)2n/7=Integer

805+ (Hard) | Multiples and Factors, Number Properties

805+ (Hard) | Multiples and Factors, Number Properties hide tags

GMATinsight

26 Nov 2020, 22:36

13

5

1,838

by: bumpbot

31 Jul 2025, 20:08

Is n divisible by 11 with no remainder?

705-805 (Hard) | Multiples and Factors

705-805 (Hard) | Multiples and Factors hide tags

sldisek783

29 Sep 2023, 12:35

1

5

1,549

by: Tukkebaaz

30 Sep 2023, 07:44

ER

Is n divisible by 12 ? (1) n/6 is an integer. (2) n/4 is an integer.

Sub 505 (Easy) | Multiples and Factors

Sub 505 (Easy) | Multiples and Factors hide tags

Bunuel

18 Oct 2019, 05:06

10

3

6,985

by: bumpbot

12 Nov 2024, 01:55