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

182

15

82,849

by: thisisakr

16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of May 2026

1, 2

Bunuel

01 Jan 2026, 05:45

862

24

191,051

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

490,994

by: bb

29 Aug 2025, 13:27

ER

Is n/18 an integer? (1) 5n/18 is an integer. (2) 3n/18 is an integer.

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

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

1, 2

shinewine

29 Aug 2006, 14:07

324

21

49,181

by: bumpbot

22 Oct 2025, 00:58

ER

x^n = x^(n+2) for any integer n. Is it true that x > 0?

705-805 (Hard) | Exponents, Inequalities

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

1, 2

viktorija

21 Dec 2014, 20:41

167

21

21,202

by: bumpbot

02 Nov 2025, 21:19

ER

A circle is drawn on a coordinate plane. If a line is drawn

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

1, 2

saintforlife

15 Oct 2013, 22:17

126

21

27,291

by: bumpbot

28 Nov 2025, 09:41

ER

If y ≠ 1, is x = 1 ? (1) x^2 + y^2 = 1 (2) y = 1 - x

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

1, 2

MDK

11 Oct 2013, 11:50

530

21

95,615

by: bumpbot

10 Dec 2025, 01:59

ER

If ab0 and points (-a, b) and (-b, a) are in the same quadrant of the

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

1, 2

jitendra

05 Dec 2022, 08:26

308

21

43,843

by: bumpbot

19 Dec 2025, 10:16

ER

Is |a-c| + |a| = |c|? (1) ab > bc (2) ab < 0

805+ (Hard) | Absolute Values, Inequalities

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

1, 2

RashedVai

18 Jul 2021, 07:22

286

21

20,013

by: bumpbot

02 Jan 2026, 05:08

ER

Bob and Wendy left home to walk together to a restaurant for

805+ (Hard) | Distance and Speed Problems

805+ (Hard) | Distance and Speed Problems hide tags

1, 2

sondenso

03 Mar 2008, 23:46

337

21

52,200

by: bumpbot

04 Jan 2026, 00:31

ER

For each landscaping job that takes more than 4 hours, a certain

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2

mrsmarthi

08 Oct 2009, 17:15

250

21

42,779

by: bumpbot

06 Jan 2026, 21:23

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If n is a positive integer and k = 5.1*10^n, what is the value of k?

555-605 (Medium) | Exponents

555-605 (Medium) | Exponents hide tags

1, 2

MHIKER

23 Apr 2020, 13:50

325

21

55,555

by: bumpbot

15 Jan 2026, 07:37

ER

If 0 < x < 1, is it possible to write x as a terminating dec

705-805 (Hard) | Fractions and Ratios, Number Properties

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

1, 2

Rock750

24 Jun 2013, 02:20

279

21

34,120

by: arunbhati

17 Jan 2026, 05:02

ER

A research project has a successful outcome if its research is

705-805 (Hard) | Non-Math Related

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

1, 2

GMATinsight

26 May 2024, 02:12

145

21

11,829

by: miag

28 Jan 2026, 20:10

ER

At the beginning of last month, a stationery store had in stock 250 wr

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

1, 2

Bunuel

19 Jun 2014, 12:42

133

21

24,454

by: bumpbot

30 Jan 2026, 11:10

ER

If xy 0, is x^3 + y^3 > 0 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

1, 2

Bunuel

24 Jun 2018, 11:23

352

21

46,973

by: totaltestprepNick

23 Feb 2026, 13:16

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The sequence a1, a2, a3, ..., an of n integers is such that ak = k if

555-605 (Medium) | Sequences

555-605 (Medium) | Sequences hide tags

1, 2

Summer3

11 Jun 2019, 04:29

340

21

117,312

by: totaltestprepNick

01 Mar 2026, 19:22

ER

In Jefferson School, 300 students study French or Spanish or

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

1, 2

ISBtarget

15 Feb 2012, 12:36

248

21

53,551

by: totaltestprepNick

03 Mar 2026, 13:06

ER

If $1,000 is deposited in a certain bank account and remains in the

705-805 (Hard) | Exponents, Percent and Interest Problems

705-805 (Hard) | Exponents, Percent and Interest Problems hide tags

1, 2

butterfly

01 Nov 2010, 17:32

515

21

64,693

by: bumpbot

07 Mar 2026, 09:03

ER

If the average (arithmetic mean) of the five numbers x, 7, 2, 16 and

555-605 (Medium) | Statistics and Sets Problems

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

1, 2

satishreddy

19 Oct 2010, 00:58

173

21

67,923

by: bumpbot

20 Mar 2026, 01:48

ER

If S is the sum of the first n positive integers, what is the value of

605-655 (Medium) | Inequalities, Statistics and Sets Problems

605-655 (Medium) | Inequalities, Statistics and Sets Problems hide tags

1, 2

abhi758

08 May 2010, 02:11

192

21

31,408

by: juliansorre

26 Mar 2026, 12:43

ER

At a certain bakery, each roll costs r cents and each doughnut costs

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

1, 2

joemama142000

18 Dec 2005, 18:08

86

21

21,657

by: bumpbot

07 Apr 2026, 03:06

ER

Yesterday Bookstore B sold twice as many softcover books as hardcover

805+ (Hard) | Statistics and Sets Problems, Word Problems

805+ (Hard) | Statistics and Sets Problems, Word Problems hide tags

1, 2

parkhydel

28 Apr 2020, 04:59

434

21

40,639

by: Bunuel

14 May 2026, 12:12

ER

Company X's profits this year increased by 25% over last year's profit

555-605 (Medium) | Percent and Interest Problems, Word Problems

555-605 (Medium) | Percent and Interest Problems, Word Problems hide tags

1, 2

Bunuel

02 Aug 2018, 23:42

185

21

31,004

by: Ishaan30

20 May 2026, 03:00

ER

Last year 3/5 of the members of a certain club were males. This year

805+ (Hard) | Fractions and Ratios

805+ (Hard) | Fractions and Ratios hide tags

1, 2

Carcass

27 Jul 2017, 08:17

570

21

49,199

by: imaityaroy

29 May 2026, 04:09

ER

When integer A divide by 79 remainder is X and when integer B divided

805+ (Hard) | Multiples and Factors, Remainders

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

1, 2

Harley1980

20 Apr 2015, 23:12

29

22

6,522

by: bumpbot

01 Mar 2019, 16:17

ER

Is a^2*b > 0?

655-705 (Hard) | Absolute Values, Inequalities

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

1, 2

iamba

03 Jun 2015, 06:51

23

22

8,017

by: bumpbot

25 Oct 2021, 13:29

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Is |x| + |x - 1| = 1? (1) x ≥ 0 (2) x ≤ 1

555-605 (Medium) | Absolute Values, Inequalities

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

1, 2

abhi758

08 Jun 2021, 08:38

58

22

17,561

by: bumpbot

10 Jul 2022, 22:59

ER

Is ABCD rectangular

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

1, 2

skamal7

20 Jul 2013, 09:46

54

22

11,513

by: bumpbot

05 Feb 2023, 00:14

ER

Is triangle ABC obtuse angled?

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

1, 2

Tornikea

16 Aug 2015, 11:36

163

22

18,234

by: avigutman

23 Apr 2023, 07:05

ER

Does there exist an integer d such that x > d > 1 & x/d is an integer?

705-805 (Hard) | Inequalities, Number Properties

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

1, 2

noyaljoseph

24 Jan 2016, 21:33

50

22

10,567

by: bumpbot

14 Mar 2024, 01:00

ER

Is x an integer greater than 1?

805+ (Hard) | Inequalities, Number Properties

805+ (Hard) | Inequalities, Number Properties hide tags

1, 2

duahsolo

30 Jan 2017, 09:20

18

22

6,809

by: bumpbot

16 Jun 2024, 04:00

ER

The figure above shows a portion of a road map on which the measures

555-605 (Medium) | Geometry

555-605 (Medium) | Geometry hide tags

1, 2

Bunuel

26 Apr 2019, 07:48

175

22

24,123

by: bumpbot

24 Aug 2024, 09:53

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

10,016

by: bumpbot

03 Oct 2024, 23:48

ER

If x, y, and z are all positive integers, what is the

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

1, 2

Maxswe

08 Nov 2012, 10:27

26

22

13,414

by: bumpbot

22 Nov 2024, 02:06

ER

In the xy-plane, the straight-line graphs of the three equations above

605-655 (Medium) | Coordinate Plane

605-655 (Medium) | Coordinate Plane hide tags

1, 2

Bunuel

23 Mar 2025, 02:56

423

22

50,455

by: bumpbot

07 Jan 2025, 10:56

ER

How many different prime factors does positive integer n have?

705-805 (Hard) | Multiples and Factors, Number Properties

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

1, 2

Bunuel

14 May 2015, 05:25

64

22

16,420

by: bumpbot

13 Jan 2025, 12:36

ER

If d is a positive integer and f is the product of the first 30 positi

605-655 (Medium) | Exponents +2 tags

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

1, 2

enigma123

27 Aug 2019, 01:58

501

22

60,082

by: bumpbot

01 Feb 2025, 09:14

ER

Is x^2 + y^2 > 100? (1) 2xy < 100 (2) (x + y)^2 > 200

805+ (Hard) | Algebra, Exponents

805+ (Hard) | Algebra, Exponents hide tags

1, 2

arvindg

09 Jun 2021, 08:42

255

22

36,872

by: Pablopikachu

28 Mar 2025, 13:11

ER

Set A consists of 25 distinct numbers. We pick n numbers

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

1, 2

Bunuel

09 Jul 2013, 15:29

58

22

24,909

by: bumpbot

02 Apr 2025, 23:15

ER

In how many ways can a coach select a 4-person university team from a

505-555 (Easy) | Combinations +2 tags

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

1, 2

pate13

24 Aug 2015, 17:49

64

22

16,004

by: bumpbot

18 Apr 2025, 05:16

ER

If p is a positive integer, what is the value of p?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

1, 2

jimmyjamesdonkey

09 Apr 2014, 01:17

115

22

63,059

by: Bunuel

01 May 2025, 13:17

ER

If x is to be selected at random from T, what is the probabi

555-605 (Medium) | Probability, Statistics and Sets Problems

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

1, 2

vksunder

18 Aug 2008, 12:17

146

22

29,368

by: Bunuel

17 May 2025, 10:26

ER

If a and b are integers, is a^5 < 4^b ? (1) a^3 = –27 (2) b^2 = 16

555-605 (Medium) | Exponents, Inequalities

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

1, 2

Bunuel

26 Apr 2019, 02:38

170

22

30,331

by: minnieminnoon

02 Jun 2025, 04:40

ER

Is the standard deviation of the numbers X, Y and Z equal to

505-555 (Easy) | Statistics and Sets Problems

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

1, 2

fozzzy

17 Jan 2013, 06:15

137

22

30,032

by: bumpbot

25 Jun 2025, 04:58

ER

S is a set of points in the plane. How many distinct triangles can be

Sub 505 (Easy) | Combinations, Coordinate Plane

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

1, 2

GGUY

15 Mar 2008, 00:41

384

22

66,952

by: Bunuel

31 Jul 2025, 23:54

ER

A milk vendor mixes water with milk and sells the mixture at the same

805+ (Hard) | Mixture Problems

805+ (Hard) | Mixture Problems hide tags

1, 2

CapnSal

11 Jun 2024, 03:43

242

22

16,969

by: k11work

03 Aug 2025, 09:59

ER

Pam owns an inventory of unopened packages of corn and rice

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

1, 2

Vinayprajapati

15 Apr 2016, 21:55

197

22

18,098

by: bumpbot

23 Aug 2025, 12:55

ER

Sequence S consists of 24 nonzero integers. If each term in

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

1, 2

zisis

04 Jun 2013, 04:55

52

22

19,764

by: bumpbot

28 Aug 2025, 06:45

ER

What is the probability of selecting a clean number from a s

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

1, 2

GMATT73

26 Oct 2005, 07:52

54

22

26,231

by: bumpbot

29 Aug 2025, 22:16

ER

If r and s are positive integers, is r/s an integer?

555-605 (Medium) | Multiples and Factors

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

1, 2

BANON

23 Feb 2012, 08:13

365

22

75,987

by: bumpbot

04 Sep 2025, 21:45

ER

M and N are integers such that 6<M<N.What is the value of N?

655-705 (Hard) | Arithmetic +2 tags

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

1, 2

AbdurRakib

18 Jun 2021, 14:16

660

22

63,959

by: bumpbot

08 Sep 2025, 13:33

ER

In any sequence of n nonzero numbers, a pair of consecutive terms with

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

1, 2

Bunuel

26 Apr 2019, 02:32

247

22

39,034

by: Bunuel

09 Sep 2025, 03:10