GMAT Data Sufficiency (DS) Forum - Free Practice Questions

ER

Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

179

15

79,742

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

188,981

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

488,682

by: bb

29 Aug 2025, 13:27

ER

If a, b, c, and d are numbers on the number line shown and if

605-655 (Medium) | Algebra, Sequences

605-655 (Medium) | Algebra, Sequences hide tags

ramonguib

11 Jun 2016, 11:39

725

16

50,593

by: lehung97

02 Feb 2026, 11:08

ER

Devil's Dozen!!!

605-655 (Medium) | Algebra +9 tags

605-655 (Medium) | Algebra, Combinations, Distance and Speed Problems, Multiples and Factors, Number Properties, Overlapping Sets, Percent and Interest Problems, Remainders, Statistics and Sets Problems, Word Problems hide tags

1, 2, 3, 4

Bunuel

19 Mar 2012, 06:54

1.3k

78

175,137

by: bumpbot

01 Feb 2026, 23:35

ER

If f(x) and g(x) are two functions, what is the value of g(2)?

605-655 (Medium) | Algebra, Functions and Custom Characters

605-655 (Medium) | Algebra, Functions and Custom Characters hide tags

Bunuel

10 Jul 2017, 04:37

55

8

8,118

by: bumpbot

28 Jan 2026, 02:06

ER

If x^2 + y^2 = 100, what is the value of (x - y)^2 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

GMATNinja

17 Apr 2022, 23:07

14

6

7,702

by: bumpbot

25 Jan 2026, 22:49

ER

Is p + q = 0 ?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

Asifpirlo

09 Aug 2013, 02:51

17

6

4,015

by: bumpbot

25 Jan 2026, 00:22

ER

If r and s are negative, is r/s less than 1 ?

705-805 (Hard) | Algebra, Inequalities

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

enigma123

07 Mar 2012, 16:24

29

7

6,797

by: bumpbot

25 Jan 2026, 00:04

ER

A child bought candy that cost 85 cents. If the child only had quarter

805+ (Hard) | Algebra, Word Problems

805+ (Hard) | Algebra, Word Problems hide tags

Bunuel

29 Mar 2017, 23:44

21

8

7,852

by: Vivek1707

24 Jan 2026, 13:39

ER

((x+y+1)/(x+y))((x+z+2)/(x+z))((x+w+3)/(x+w))>8?

805+ (Hard) | Algebra, Inequalities

805+ (Hard) | Algebra, Inequalities hide tags

fskilnik

26 Mar 2019, 10:15

6

2

1,567

by: bumpbot

23 Jan 2026, 23:16

ER

If x^3(x^2+y^2)=z^2, is xyz=0?

705-805 (Hard) | Algebra, Inequalities

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

fskilnik

25 Feb 2019, 16:03

4

2

1,687

by: bumpbot

23 Jan 2026, 22:49

ER

What is the value of the positive two-digit integer N?

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

705-805 (Hard) | Absolute Values, Algebra, Multiples and Factors hide tags

fskilnik

20 Feb 2019, 07:46

3

5

2,540

by: bumpbot

23 Jan 2026, 02:49

ER

If Rebeca drives to work at x mph she will be one minute late, but if

705-805 (Hard) | Algebra, Distance and Speed Problems

705-805 (Hard) | Algebra, Distance and Speed Problems hide tags

fskilnik

14 Feb 2019, 07:30

7

6

2,209

by: bumpbot

23 Jan 2026, 02:34

ER

If m and n are integers greater than 1, what is the value of

705-805 (Hard) | Algebra, Exponents

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

fskilnik

11 Feb 2019, 06:32

6

4

1,799

by: bumpbot

23 Jan 2026, 02:03

ER

If p(x) = kx^2 - kx - 12, for all values of x, what is the value of k?

655-705 (Hard) | Algebra, Multiples and Factors

655-705 (Hard) | Algebra, Multiples and Factors hide tags

fskilnik

06 Feb 2019, 06:51

9

4

1,805

by: bumpbot

21 Jan 2026, 02:15

ER

If b, c, and d are constants and x^2 + bx + c = (x +

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

galiya

05 Aug 2011, 06:16

110

11

14,898

by: bumpbot

20 Jan 2026, 11:44

ER

Pat is reading a book that has a total of 15 chapters. Has Pat read at

655-705 (Hard) | Algebra, Word Problems

655-705 (Hard) | Algebra, Word Problems hide tags

prude_sb

15 Jan 2007, 21:12

122

15

23,261

by: bumpbot

20 Jan 2026, 11:32

ER

If x^2 - y^2 = 1, what is the value of x? (1) x + y = 1/2 (2) y^2 = 9

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

20 Sep 2023, 08:15

4

2

1,582

by: bumpbot

20 Jan 2026, 02:32

ER

If (n + 3)(n − 1) − (n − 2)(n − 1) = m(n − 1), what is the value of n?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

01 Nov 2018, 00:08

9

7

2,472

by: bumpbot

19 Jan 2026, 03:03

ER

Robert pays x% of his gross monthly salary in taxes, h dollars in

555-605 (Medium) | Algebra +2 tags

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

ExpertsGlobal5

19 Nov 2025, 23:29

4

2

639

by: Bunuel

18 Jan 2026, 11:00

ER

The rate R at which a chemical reaction in a certain industrial proces

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

jm2k5

21 Dec 2023, 06:02

91

13

13,873

by: consistentprep

18 Jan 2026, 04:02

ER

There are 1,280 books at a library. Everyone borrows these books at le

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

GMATBusters

07 Oct 2018, 06:56

9

8

2,574

by: bumpbot

17 Jan 2026, 23:55

ER

If a, b, c, and d are positive numbers, and a/b=c/d, what is the value

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

17 Jul 2016, 11:32

6

5

3,788

by: bumpbot

16 Jan 2026, 23:47

ER

If a, b, c, and d are positive integers, what is the value of (a + b)

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

09 Mar 2022, 07:00

17

5

4,203

by: bumpbot

16 Jan 2026, 23:45

ER

a family has only one son. The father says "After x

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

prince00113

27 Jan 2018, 14:06

9

6

2,138

by: bumpbot

14 Jan 2026, 23:19

ER

Is y a positive integer? (1) y^2 - 1 = 0 (2) y < 1

605-655 (Medium) | Algebra, Number Properties

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

Sanya15

06 Jul 2021, 00:09

11

4

2,744

by: shivani1351

14 Jan 2026, 06:25

ER

P, Q, R, S, X, Y are real numbers such that P < X < Q and R < Y < S.

705-805 (Hard) | Algebra, Inequalities

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

amanvermagmat

21 Jun 2018, 21:59

8

3

1,744

by: bumpbot

13 Jan 2026, 23:57

ER

If y>0, is y an even number?

705-805 (Hard) | Algebra, Number Properties

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

chetan2u

15 Jun 2018, 12:26

7

3

1,485

by: bumpbot

13 Jan 2026, 23:46

ER

If x and y are positive and x + y = 20, is y > x?

805+ (Hard) | Algebra +3 tags

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

chetan2u

02 Jun 2018, 21:39

8

4

2,347

by: bumpbot

13 Jan 2026, 00:29

ER

If rs 0, does 1/r + 1/s = 1 (1) rs = 1 (2) s + r = 2.5 Did

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

rxs0005

12 Dec 2010, 09:05

19

7

4,482

by: bumpbot

13 Jan 2026, 00:18

ER

If x and y are integers and x/y is also an integer, is x an even numbe

655-705 (Hard) | Algebra +2 tags

655-705 (Hard) | Algebra, Fractions and Ratios, Multiples and Factors hide tags

chetan2u

11 Mar 2018, 07:52

6

5

1,979

by: bumpbot

08 Jan 2026, 23:12

ER

If v and w are different integers, does v = 0? (1) vw = v^2 (2) w = 2

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

zerotoinfinite2006

10 Oct 2010, 09:36

113

18

22,150

by: bumpbot

08 Jan 2026, 08:57

ER

DS Prep resources

555-605 (Medium) | Algebra +2 tags

555-605 (Medium) | Algebra, Fractions and Ratios, Math Related hide tags

miag

07 Jan 2026, 06:04

1

0

248

by: miag

07 Jan 2026, 06:04

ER

If 20x + 30y = 280, what is the value of x?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

06 Oct 2015, 06:01

5

8,488

by: bumpbot

06 Jan 2026, 21:01

ER

What is the value of x?

555-605 (Medium) | Algebra, Roots

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

shrive555

04 Nov 2010, 18:22

102

13

14,174

by: bumpbot

06 Jan 2026, 10:09

ER

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

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

gmatt1476

21 Sep 2019, 17:31

57

7

14,246

by: bumpbot

06 Jan 2026, 08:42

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

2,734

by: bumpbot

04 Jan 2026, 22:21

ER

Is a^b > b^a?

655-705 (Hard) | Algebra, Inequalities

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

fozzzy

20 May 2013, 23:31

6

4

3,229

by: bumpbot

31 Dec 2025, 03:23

ER

If x y, and y = (x^2 - y^2)/(x-y), then what is the value of y ?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

kenman

16 Oct 2011, 04:07

14

2

6,563

by: WiziusCareers1

26 Dec 2025, 22:06

ER

If f(x) = x^2 - x - 6, is f(x) ≥ g(x)?

605-655 (Medium) | Algebra, Inequalities

605-655 (Medium) | Algebra, Inequalities hide tags

WoundedTiger

04 Jan 2013, 02:54

3

10

5,525

by: bumpbot

26 Dec 2025, 02:56

ER

What is the value of (x - 1)(y + 1) ? (1) x + y = 4 (2) xy = 3

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

Bunuel

06 Jul 2018, 00:15

3

6

4,015

by: bumpbot

25 Dec 2025, 21:59

ER

ab + cd = efg

655-705 (Hard) | Algebra, Number Properties

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

PrepTap

04 May 2015, 05:46

14

6

6,098

by: bumpbot

25 Dec 2025, 07:42

ER

NEW!!! Tough and tricky exponents and roots questions

555-605 (Medium) | Algebra +2 tags

555-605 (Medium) | Algebra, Exponents, Roots hide tags

1, 2, 3

Bunuel

12 Jan 2012, 03:50

1.2k

46

145,052

by: Bunuel

24 Dec 2025, 12:37

ER

If xy = - 6, what is the value of xy(x+y)?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

29 Oct 2021, 10:56

225

19

57,273

by: bumpbot

19 Dec 2025, 09:13

ER

If x, y, and z are all distinct positive integers and the percent

805+ (Hard) | Algebra +2 tags

805+ (Hard) | Algebra, Number Properties, Percent and Interest Problems hide tags

samusa

27 Mar 2016, 13:36

150

14

15,635

by: bumpbot

12 Dec 2025, 01:31

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

95,488

by: bumpbot

10 Dec 2025, 01:59

ER

A monument is made by stacking identical rectangular blocks

605-655 (Medium) | Algebra

605-655 (Medium) | Algebra hide tags

goodyear2013

29 May 2014, 06:46

5

4,791

by: bumpbot

09 Dec 2025, 09:59

ER

Is a > b ? (1) a/b = 7/10 (2) a = 70/100*b

605-655 (Medium) | Algebra, Inequalities

605-655 (Medium) | Algebra, Inequalities hide tags

Maude

28 Jun 2021, 07:54

79

11

14,623

by: bumpbot

07 Dec 2025, 21:55

ER

If k is an integer and m > 0, is 2^k + 3^k = m ?

705-805 (Hard) | Algebra, Exponents

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

rjkaufman21

04 Oct 2011, 18:52

21

8

5,067

by: bumpbot

06 Dec 2025, 23:08

ER

If wx = y, then what is the value of xy?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

jonblazon

31 Dec 2010, 04:51

138

11

36,190

by: bumpbot

05 Dec 2025, 12:55

ER

If 6xy = x^2*y + 9y, what is the value of xy?

805+ (Hard) | Algebra

805+ (Hard) | Algebra hide tags

ArvGMAT

06 Jul 2014, 11:09

249

18

45,713

by: ExpertsGlobal5

03 Dec 2025, 22:28

ER

A stationery store sells pens and pencils. If the price of each item

655-705 (Hard) | Algebra, Word Problems

655-705 (Hard) | Algebra, Word Problems hide tags

Bunuel

12 Apr 2026, 05:07

19

6

18,668

by: bumpbot

03 Dec 2025, 19:36