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

79,863

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

189,006

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

488,716

by: bb

29 Aug 2025, 13:27

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What is the value of the positive integer n? (1) n^2 + 2n has four di

805+ (Hard) | Multiples and Factors

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BillyZ

28 Feb 2017, 00:26

47

11

7,228

by: bumpbot

14 Oct 2022, 06:04

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If a, b, and c represent distinct digits, what is the value of the two

805+ (Hard) | Arithmetic

805+ (Hard) | Arithmetic hide tags

Bunuel

21 Mar 2017, 04:49

47

13

8,086

by: bumpbot

13 Oct 2022, 10:02

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If a^2b^2c^3 = 4500. Is b + c = 7?

805+ (Hard) | Algebra +2 tags

805+ (Hard) | Algebra, Exponents, Number Properties hide tags

MichelleSavina

22 Jan 2011, 01:11

50

15

11,038

by: bumpbot

12 Oct 2022, 12:34

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Positive integers a, b and c are all less than 10. If the sum of all

805+ (Hard) | Arithmetic +2 tags

805+ (Hard) | Arithmetic, Combinations, Number Properties hide tags

Bunuel

11 Oct 2022, 02:01

23

6

4,594

by: chetan2u

12 Oct 2022, 00:06

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A bag contains at least 10 blue marbles and at least 10 red marbles

805+ (Hard) | Remainders

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Bunuel

25 Nov 2019, 01:02

12

4

5,011

by: gmatprepper94111

09 Oct 2022, 21:54

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If a, b and c are integers such that b > a, is b+c > a

805+ (Hard) | Geometry, Inequalities

805+ (Hard) | Geometry, Inequalities hide tags

sondenso

10 Aug 2012, 00:22

112

16

40,261

by: bumpbot

07 Oct 2022, 20:29

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If x and y are integers, what is the value of xy? (1) x^2 - y^2 < 0

805+ (Hard) | Algebra +2 tags

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Bunuel

20 Apr 2018, 06:38

11

9

3,407

by: bumpbot

29 Sep 2022, 03:23

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The equation of line k is y = mx + b, where m and b are some constants

805+ (Hard) | Coordinate Plane

805+ (Hard) | Coordinate Plane hide tags

TwoThrones

29 Apr 2014, 12:21

56

16

12,538

by: bumpbot

29 Sep 2022, 00:04

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What is the value of y?

805+ (Hard) | Algebra +2 tags

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GGMU

24 Jun 2016, 08:21

143

18

15,039

by: bumpbot

18 Sep 2022, 11:16

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What is b in the circle shown above?

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

godot53

27 Feb 2017, 22:50

35

19

8,121

by: bumpbot

16 Sep 2022, 21:06

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If z denotes the tenths digit in the decimal representation of the tim

805+ (Hard) | Distance and Speed Problems, Number Properties

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

Bunuel

26 May 2020, 02:27

28

5

4,453

by: bumpbot

15 Sep 2022, 12:29

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A Rhombus is said to be mystic quadrilateral if its diagonals are in

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

GMATBusters

10 May 2020, 10:52

6

12

2,583

by: bumpbot

12 Sep 2022, 12:29

In the equation x^2+kxm=0 where k and m are both integers, what is m?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Abhishekgmat87

09 Apr 2022, 08:25

18

9

4,824

by: kratos0906

28 Aug 2022, 07:30

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The figure shows the intersection of a Square ABCD and a Circle. What

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

GMATBusters

07 Dec 2019, 19:00

33

17

6,215

by: bumpbot

25 Aug 2022, 17:25

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What is the measure of angle A of hexagon ABCDEF? (1) For hexagon AB

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

amanvermagmat

16 May 2018, 22:23

7

4

2,635

by: dushyant099

25 Aug 2022, 10:29

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In triangle ABC above, if AD = BC ,what is the value of x?

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

27 Jan 2021, 01:15

20

7

5,403

by: bumpbot

22 Aug 2022, 18:07

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GMAT Club World Cup 2022 (DAY 5): The infinite decreasing sequence

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

15 Jul 2022, 08:00

28

3

4,350

by: Bunuel

19 Aug 2022, 10:48

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GMAT Club World Cup 2022 (DAY 3): If a + b + c + d = 12, what is the

805+ (Hard) | Absolute Values, Algebra

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

Bunuel

13 Jul 2022, 08:00

20

8

5,317

by: Bunuel

19 Aug 2022, 07:41

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GMAT Club World Cup 2022 (DAY 3): If |a| > |b| > |c|, is a*b^3*c^3 > a

805+ (Hard) | Absolute Values, Inequalities

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

Bunuel

13 Jul 2022, 08:00

21

6

4,836

by: Bunuel

19 Aug 2022, 06:22

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GMAT Club World Cup 2022 (DAY 2): List A consists of n integers. One

805+ (Hard) | Statistics and Sets Problems

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

Bunuel

12 Jul 2022, 08:00

16

4

3,952

by: Bunuel

19 Aug 2022, 04:31

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Two cars A and B start from diametrically opposite points of a circula

805+ (Hard) | Distance and Speed Problems, Fractions and Ratios

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chetan2u

13 Jan 2018, 05:28

46

12

10,145

by: bumpbot

16 Aug 2022, 16:16

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If a and b, are positive, what is the value of a + b ?

805+ (Hard) | Exponents

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KanishkM

07 Jun 2019, 00:48

17

11

3,735

by: bumpbot

14 Aug 2022, 13:03

If a < b and x < y, is ab < xy? 1) a < x and b < y 2) ax < by

805+ (Hard) | Inequalities

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Russ19

08 Aug 2022, 07:53

1

2

1,246

by: rkhosla

14 Aug 2022, 10:32

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If a#-b, is (a-b)/(b+a) > 1?

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

tkarthi4u

03 Oct 2009, 21:51

20

7

8,177

by: bumpbot

11 Aug 2022, 23:57

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If ab - 2b = (4 - a)b, what is the value of b? (1) |a^2 - 9| ≤ 0 (2)

805+ (Hard) | Absolute Values +2 tags

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Bunuel

03 Jul 2020, 01:59

29

15

7,356

by: bumpbot

10 Aug 2022, 11:57

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X is a three-digit number whose hundredth digit, tens digit, and units

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

AR15J

10 Jul 2018, 21:24

8

3

4,042

by: bumpbot

09 Aug 2022, 12:07

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For the infinite series a1, a2, ..., an, an=a(n−1)+n, and a1=1. If n>4

805+ (Hard) | Number Properties, Sequences

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

Bunuel

21 Nov 2016, 02:46

13

6

5,667

by: bumpbot

08 Aug 2022, 22:22

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Point A lies on a circle whose center is at point C. Does point B lie

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

GMATBusters

15 Dec 2018, 10:15

21

12

4,272

by: Rickooreo

08 Aug 2022, 13:00

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In the xy-plane, l and m are two lines. (3, 4) is a point only on

805+ (Hard) | Coordinate Plane

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hetmavani

11 Apr 2018, 10:37

17

3

2,744

by: bumpbot

07 Aug 2022, 14:18

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ABC is an equilateral triangle, and point D is the midpoint of side BC

805+ (Hard) | Geometry

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Bunuel

11 Apr 2022, 01:30

10

6

3,803

by: figjam786

05 Aug 2022, 12:55

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For distinct positive integers x and y, where x < y, the function FP(x

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

Bunuel

03 Jun 2020, 23:02

16

7

2,981

by: bumpbot

05 Aug 2022, 09:46

ER

What is the numerical value of

805+ (Hard) | Algebra, Fractions and Ratios

805+ (Hard) | Algebra, Fractions and Ratios hide tags

TheUltimateWinner

10 Feb 2020, 11:07

6

8

2,544

by: bumpbot

05 Aug 2022, 09:34

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GMAT Club World Cup 2022 (DAY 7): If a, b, c, and d are distinct

805+ (Hard) | Multiples and Factors, Statistics and Sets Problems

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

Bunuel

19 Jul 2022, 08:00

29

19

3,944

by: gmatophobia

04 Aug 2022, 23:40

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In the given Figure, what is the Area of the Equilateral triangle ABC?

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

GMATBusters

29 Sep 2018, 10:24

15

8

3,926

by: bumpbot

02 Aug 2022, 15:56

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If ab 0 and (|x| a)(|x| b) = 0, then how many possible solutions

805+ (Hard) | Absolute Values

805+ (Hard) | Absolute Values hide tags

Bunuel

21 Jul 2022, 01:30

2

1

1,007

by: Dev23

28 Jul 2022, 04:42

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If a and n are positive numbers, does 2a^(2x) = n ?

805+ (Hard) | Exponents, Inequalities

805+ (Hard) | Exponents, Inequalities hide tags

Bunuel

19 Jan 2020, 23:10

22

9

5,820

by: bumpbot

27 Jul 2022, 05:08

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What is the value of |(x + 5)/(x + 7)| ?

805+ (Hard) | Absolute Values, Algebra

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

Bunuel

15 Dec 2019, 23:31

12

9

3,907

by: bumpbot

26 Jul 2022, 14:21

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P, Q and R are positive single integers. Does the three

805+ (Hard) | Number Properties

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Kaushik786

12 Mar 2021, 20:54

6

2

2,233

by: thisisit25

23 Jul 2022, 04:32

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GMAT Club World Cup 2022 (DAY 8): If xy <= 0, is x + y < 0?

805+ (Hard) | Absolute Values +3 tags

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

Bunuel

20 Jul 2022, 08:00

23

6

3,341

by: av1901

21 Jul 2022, 05:55

What's the value of abc if

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

figjam786

20 Jul 2022, 04:39

4

1

1,631

by: omsgapsa

19 Jul 2022, 11:30

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Is x/y < 1? (1) x < y (2) 2x + 3y = 0

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

sauravleo123

21 Apr 2020, 23:01

4

3

1,818

by: bumpbot

15 Jul 2022, 01:37

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If a, b, c, d, and e are positive numbers and if a^(1/2) + b^(1/2)

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Bunuel

01 Jul 2022, 01:30

6

2

1,622

by: $!vakumar.m

13 Jul 2022, 05:29

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Triangle RST lies in the xy-plane. Point R has coordinates (a,b), poin

805+ (Hard) | Coordinate Plane

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Bunuel

27 Aug 2015, 01:38

32

5

5,478

by: bumpbot

11 Jul 2022, 00:05

ER

If x+2yz= xyz, where x, y and z are positive integers, what is the val

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

nick1816

24 Aug 2020, 05:28

10

3

1,812

by: bumpbot

10 Jul 2022, 14:58

ER

On the xy-plane, what is the area of a right triangle, one side of whi

805+ (Hard) | Coordinate Plane

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Bunuel

25 May 2022, 06:00

1

5

2,035

by: RedViburnum

10 Jul 2022, 01:04

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Math Revolution and GMAT Club Contest! For positive integers a and b,

805+ (Hard) | Remainders

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1, 2

Bunuel

05 Dec 2015, 08:52

80

30

12,144

by: bumpbot

09 Jul 2022, 18:22

ER

A circle is inscribed in a quadrilateral ABCD such a way that it touch

805+ (Hard) | Geometry

805+ (Hard) | Geometry hide tags

Bunuel

01 May 2020, 03:17

19

3

4,275

by: bumpbot

04 Jul 2022, 21:24

The temperature was measured once daily for 400 days. On 76% of these

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

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

natmyrrha

23 Jun 2019, 02:08

26

4

4,014

by: bumpbot

04 Jul 2022, 17:16

ER

If x, y and k are integers, is xy divisible by 3? (1) y =

805+ (Hard) | Exponents, Multiples and Factors

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shrive555

24 Oct 2010, 12:54

30

8

10,596

by: bumpbot

23 Jun 2022, 17:11

ER

If p is a prime number, what is the value of p ? (1) \sqrt

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

1, 2

Bunuel

03 Oct 2010, 10:30

38

20

14,637

by: bumpbot

23 Jun 2022, 13:44