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

178

15

79,038

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

857

24

188,710

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

488,241

by: bb

29 Aug 2025, 13:27

ER

Is m > 0? (1) mn = 15 (2) m + n = 8

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

GMATBusters

01 Feb 2020, 19:46

2

9

1,981

by: Archit3110

02 Feb 2020, 02:15

ER

Is m > 0? (1) |m|/2 = 2 (2) m^3 = 64

Sub 505 (Easy) | Absolute Values, Algebra

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

Bunuel

25 Jul 2016, 10:18

4

5

4,558

by: bumpbot

14 Dec 2021, 22:36

ER

Is m > 0 ? (1) m^2/(-3) < 0 (2) (-m)(-5) > 0

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Rs1991

08 Jun 2013, 16:49

2

3

3,212

by: bumpbot

27 Oct 2020, 08:17

ER

Is m > 0 ? (1) (m|n| - |mn|)/|m+n| < 0 (2) |m + n| > 0

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

J2S2019

26 Feb 2020, 03:22

8

4

2,635

by: MathRevolution

29 Feb 2020, 19:32

ER

Is line y=kx+b tangent to circle x^2+y^2=1?

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

smyarga

07 Apr 2020, 06:27

14

4

2,436

by: bumpbot

17 Jun 2025, 14:30

ER

Is line y = kx + b tangent to circle x^2 + y^2 = 1 ?

705-805 (Hard) | Coordinate Plane

705-805 (Hard) | Coordinate Plane hide tags

manulath

06 Jun 2012, 11:33

54

9

13,970

by: bumpbot

12 Oct 2023, 02:04

ER

Is line m parallel to the line given by the equation y = 2/3x +3?

Sub 505 (Easy) | Coordinate Plane, Geometry

Sub 505 (Easy) | Coordinate Plane, Geometry hide tags

Sajjad1994

28 Dec 2020, 23:16

3

1

1,755

by: TestPrepUnlimited

29 Dec 2020, 16:57

ER

Is line ℓ parallel to the y-axis? (1) The equation of line ℓ is x = 4

Sub 505 (Easy) | Coordinate Plane

Sub 505 (Easy) | Coordinate Plane hide tags

Bunuel

23 May 2020, 07:37

6

3

5,960

by: NitishJain

25 May 2020, 14:23

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Is lal*b > 0? 1) a*lbl > 0 2) a*b > 0 Source: GMATinsight

555-605 (Medium) | Absolute Values, Inequalities

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

GMATinsight

24 Sep 2020, 03:39

3

1,641

by: TestPrepUnlimited

27 Sep 2020, 16:49

ER

Is kx < ky? (1) 2x < 3y (2) 2x < y

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

BrentGMATPrepNow

24 Oct 2021, 07:03

2

3

1,565

by: bumpbot

30 Oct 2025, 06:14

ER

Is kw>0? (1) k - w = 10 (2) k^2 = w^2

555-605 (Medium) | Algebra, Inequalities

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

Bunuel

02 Jun 2021, 02:00

3

1

1,277

by: GMATinsight

02 Jun 2021, 02:16

ER

Is kr < 0? (1) k^2r^3 < 0 (2) |k + r| < |k| + |r|

605-655 (Medium) | Absolute Values, Inequalities

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

Bunuel

08 Jan 2023, 02:47

1

2

1,553

by: gmatophobia

08 Jan 2023, 05:52

ER

Is kn < 30? (1) 3 < k < 6 and 5 < n < 8 (2) k + n = 11

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

13 Jun 2023, 01:30

3

4

1,226

by: zhanbo

14 Jun 2023, 01:11

ER

Is kjm > 0? (1) k is positive. (2) j is negative

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

Bunuel

27 Oct 2021, 02:30

2

1,459

by: PyjamaScientist

27 Oct 2021, 03:27

ER

Is k/m > 1 ? (1) k and m are positive numbers smaller than 1. (2) m/k

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

09 Jun 2021, 04:30

2

1

1,377

by: Nidzo

09 Jun 2021, 05:48

ER

Is k! a factor of n! ? (1) The greatest prime factor of k! is 5.

505-555 (Easy) | Multiples and Factors

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

Bunuel

23 Sep 2022, 07:12

2

1

1,267

by: Aks111

23 Sep 2022, 10:23

ER

Is k^2/m < 0 (1) -3 < k < 5 (2) 2 < m < 4

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

1, 2

shivanigs

13 May 2012, 23:47

31

21

16,867

by: bumpbot

27 Jun 2025, 10:24

ER

Is k^2 odd?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

ruturaj

21 Aug 2013, 07:13

21

13

11,494

by: bumpbot

13 Mar 2025, 09:47

ER

Is k^2 a prime number?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

09 Jan 2017, 03:19

5

6

3,113

by: bumpbot

09 Jul 2019, 09:16

ER

Is k^2 +k -2 > 0 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

anartey

12 Feb 2013, 15:57

26

13

12,360

by: bumpbot

11 May 2024, 06:00

ER

Is k^2 + k 2 > 0? (1) k is an integer greater than zero.

605-655 (Medium) | Inequalities, Number Properties

605-655 (Medium) | Inequalities, Number Properties hide tags

Bunuel

23 Jul 2015, 03:18

14

9

6,929

by: bumpbot

12 Jan 2023, 10:38

ER

Is k^2 + k – 2 > 0?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

29 Oct 2017, 02:03

7

8

2,972

by: bumpbot

24 Mar 2025, 23:40

ER

Is k the square of an integer?

555-605 (Medium) | Algebra, Number Properties

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

jsphcal

05 Sep 2017, 01:08

63

8

13,115

by: bumpbot

25 Feb 2025, 09:44

ER

Is k positive? (1) k is between -2 and 3 on the number line. (2) k is

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

06 Jun 2019, 07:20

1

4

8,242

by: Kinshook

23 May 2020, 08:00

ER

Is k positive? (1) k^5 > 0 (2) -3k < 0

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

HKD1710

14 Jan 2017, 08:55

2

1,904

by: AkshdeepS

14 Jan 2017, 10:34

ER

Is k positive? (1) k + 1 < 1 − k (2) 1/k < 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

02 Jun 2021, 09:00

1

2

1,709

by: unraveled

02 Jun 2021, 10:03

ER

Is k odd? (1) 6k is an even number (2) 7k is an odd number

805+ (Hard) | Non-Math Related, Number Properties

805+ (Hard) | Non-Math Related, Number Properties hide tags

GMATBusters

30 Apr 2020, 22:33

39

6

4,617

by: bumpbot

11 Mar 2026, 19:29

ER

Is k greater than t? (1) kt = 24 (2) k^2 > t^2

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

23 Sep 2018, 22:01

37

7

12,967

by: bumpbot

18 Dec 2023, 22:15

ER

Is K greater than L ?

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

07 Feb 2018, 05:46

1

2

1,955

by: bumpbot

27 Jul 2022, 12:20

ER

Is k greater than 3?

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

tonebeeze

08 Oct 2010, 18:55

50

10

11,539

by: bumpbot

21 Aug 2025, 16:14

ER

Is k an odd integer? (1) k is an integer divisible by 3. (2) The squa

555-605 (Medium) | Multiples and Factors, Number Properties

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

Bunuel

05 Nov 2017, 02:05

2

2,417

by: BlueOwl

05 Nov 2017, 12:17

ER

Is K an integer? (1) K=P/Q, where P and Q are consequtive

Poor Quality

Poor Quality hide tags

stolyar

15 May 2003, 05:09

1

10

5,057

by: bumpbot

28 Jul 2016, 19:45

ER

Is K an even number ? (1) |K - |K|| = K + |K| (2) K^(1/2) = K

655-705 (Hard) | Absolute Values +2 tags

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

Bunuel

06 Dec 2018, 05:36

21

13

6,248

by: bumpbot

05 Jul 2023, 14:22

ER

Is k an even integer? (1) 5k + 2 is even. (2) k^2 + 1 is odd.

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

21 Mar 2018, 05:15

37

13

7,201

by: bumpbot

04 Nov 2025, 22:16

ER

Is k a multiple of 14? (1) k > 13! (2) k = m!, where m is an integer g

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

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

duahsolo

17 Aug 2016, 12:18

8

5

2,329

by: bumpbot

19 Oct 2022, 01:16

ER

Is k = 2m? (1) km < 0 (2) k + 2m < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Hadrienlbb

26 Nov 2017, 01:54

5

4

2,679

by: bumpbot

09 May 2019, 08:30

ER

Is K = |K|? (1) K is prime (2) K is even

555-605 (Medium) | Absolute Values, Number Properties

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

Bunuel

17 Nov 2022, 13:49

1

1,422

by: gmatophobia

17 Nov 2022, 13:59

ER

Is k + m < 0 ? (1) k < 0 (2) km > 0

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

nalinnair

22 May 2016, 22:36

29

7

18,844

by: totaltestprepNick

23 Feb 2026, 13:13

ER

Is k + k < k?

Poor Quality

Poor Quality hide tags

RockySinha

03 Oct 2017, 11:47

2

1

2,489

by: Bunuel

03 Oct 2017, 11:55

ER

Is k + 1/k < -1 ? (1) k^2 < 1 (2) k^3 + k^2 + k < 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

22 Jan 2023, 02:20

2

1

1,518

by: gmatophobia

22 Jan 2023, 23:17

ER

Is k < m ? (1) m = 4(k 1) (2) m = k + 2

555-605 (Medium) | Algebra, Inequalities

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

Bunuel

23 Feb 2023, 02:30

2

1,222

by: $!vakumar.m

23 Feb 2023, 06:47

ER

Is k < 0? (1) |2k + 5| = 3k + 1 (2) |k - 2| = 7k

Poor Quality

Poor Quality hide tags

btrg

16 Apr 2019, 20:25

11

5

2,778

by: Bunuel

21 Oct 2019, 20:38

ER

Is John older than Ricardo? (1) John is twice as old as Edgar, and Ed

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

19 Feb 2021, 10:04

2

3

3,430

by: Bunuel

05 Mar 2021, 05:15

ER

Is j/m + k/n = 2 ? (1) jk/(mn) = 1 (2) jn/(mk) = 1

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

09 Aug 2019, 02:55

2

5,795

by: sj296

09 Aug 2019, 10:31

Is j-k > 1/j - 1/k ?

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Poor Quality hide tags

guerrero25

13 Apr 2013, 12:00

4

5

3,789

by: mau5

15 Apr 2013, 11:09

ER

Is j prime? (1) j + 1 is not prime (2) j is odd.

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

Bunuel

12 Dec 2016, 12:28

1

2

1,806

by: bumpbot

02 Feb 2023, 19:41

ER

Is J divisible by 24?

555-605 (Medium) | Multiples and Factors

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

conty911

29 Aug 2012, 02:32

15

3

5,677

by: bumpbot

15 Oct 2022, 07:18

ER

Is J + K > L + M ?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

gmatquant25

23 Sep 2014, 12:18

20

6

4,073

by: Bunuel

09 Dec 2025, 11:09

ER

Is it true that x rounded to the nearest tenth is equal to y rounded

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

02 Jun 2021, 05:30

4

3

2,549

by: bumpbot

22 Dec 2022, 20:39

ER

Is it true that x > y? (1) The average (arithmetic mean) of x and 10

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

01 Jan 2018, 10:41

2

4

1,455

by: cksidharthan

03 Jan 2018, 20:32