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

176

15

78,816

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

856

24

188,580

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,014

by: bb

29 Aug 2025, 13:27

ER

If a·b≠0, and (x+a)(x+b)=0, is x=a? (1) x−b=0 (2) a=−b

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

10 Mar 2021, 01:15

7

4

1,811

by: Bunuel

11 Mar 2021, 01:30

ER

If a(a 5)(a + 2) = 0, is a negative? (1) a(a 7) 0 (2) a^2 2a

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

16 Jun 2022, 21:30

1

1,036

by: yashikaaggarwal

17 Jun 2022, 02:53

ER

If a* = a – a^2 for all values of a

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

LordStark

13 Feb 2019, 09:55

7

4

2,542

by: Bunuel

26 Aug 2025, 06:55

ER

If a*b = −8, what is the value of a + b? (1) a − b = 6 (2) a^2*b = 32

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

26 Nov 2019, 09:33

3

3,539

by: Crytiocanalyst

15 Oct 2021, 06:27

ER

If a*b 0, and (x a)(x + b) = 0, is b = a? (1) x + a = 0 (2) x+b=0

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

10 Feb 2023, 02:30

5

3

1,472

by: Suvankar8250

14 Mar 2023, 02:08

ER

If a*b 0, is |a|/|b| = a/b? (1) |a*b| = a*b (2) |a|/|b| = |a/b|

555-605 (Medium) | Absolute Values

555-605 (Medium) | Absolute Values hide tags

devinawilliam83

11 May 2024, 13:34

12

3

7,103

by: bumpbot

11 May 2024, 13:30

ER

If a*b is an even integer, is b a multiple of 2?

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

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

chetan2u

19 Jul 2017, 21:32

5

7

2,807

by: Purnank

05 Oct 2024, 07:03

If a*b is not equal to 0, is ( a/b)> (b/a) ? (1) a=b+10 (2) b > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

TBT

07 Mar 2023, 23:10

1

2

1,660

by: gmatophobia

08 Mar 2023, 06:03

ER

If a*b^(1/2) = c, what is the value of b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

QuantMadeEasy

29 Jan 2020, 23:51

1

2

1,575

by: bumpbot

02 Dec 2023, 07:33

ER

If a*b*c≠0, Is a*b^2*c^3 > 0? 1) a^b >0 2) b^c > 0

555-605 (Medium) | Exponents, Inequalities

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

GMATinsight

18 Apr 2020, 07:20

7

2

1,644

by: Archit3110

18 Apr 2020, 09:39

ER

If a*b*c=60, where a, b, and c are integers greater than 1

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

stunn3r

25 Jun 2013, 02:03

5

4

5,012

by: bumpbot

13 Jan 2022, 06:35

ER

If a/3 = 4/b , is a less than b?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

Bunuel

06 Oct 2015, 05:56

2

8

4,420

by: asethi

11 Oct 2015, 08:16

ER

If a/b > 4, is a > 8?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

wastedyouth

03 Dec 2013, 01:56

3

4

3,561

by: bumpbot

28 Feb 2024, 06:20

ER

if a/b = 3/5then find the value of b? 1) a+b = 64 2) Unit digit ofa^b

505-555 (Easy) | Exponents +2 tags

505-555 (Easy) | Exponents, Fractions and Ratios, Number Properties hide tags

GMATinsight

21 May 2021, 06:54

2

3

1,761

by: TestPrepUnlimited

24 May 2021, 17:41

ER

If a/b = c, what is the value of ac? (1) b^2/a = 6 (2) a/b = 4

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

25 May 2018, 01:21

3

1,524

by: alldaytestprep

15 Jun 2018, 15:27

ER

If a/b = c/d, what is the numerical ratio of b to d?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

23 Mar 2020, 04:25

1

2,918

by: Kinshook

23 Mar 2020, 04:35

ER

If a>b, is a>c? 1) a/b > c/b 2) 5ab > 6bc

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

EBITDA

25 May 2016, 07:47

5

4

2,327

by: mvictor

18 Oct 2016, 07:59

ER

If a>b>0

Poor Quality

Poor Quality hide tags

rheabiswal

01 Oct 2018, 21:38

1

6

1,845

by: rheabiswal

02 Oct 2018, 07:05

ER

If a>b>c>d and a,b,c and d are integers, what is the probability that

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

chetan2u

01 Jan 2018, 09:03

6

13

2,341

by: bumpbot

19 Jan 2026, 03:09

ER

If a<b<0 are integers, what is the value of a^3-b^3?

705-805 (Hard) | Inequalities, Multiples and Factors

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

fskilnik

03 Mar 2019, 17:21

5

3

1,147

by: fskilnik

04 Mar 2019, 05:21

ER

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

8,160

by: bumpbot

11 Aug 2022, 23:57

ER

If a#b, what is the value of a+b?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

ashiima

08 May 2015, 09:23

2

3,464

by: bumpbot

13 Jun 2024, 20:39

ER

If a+b>m, what is the value of positive integer m?

705-805 (Hard) | Exponents, Inequalities

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

immarenbe

17 Apr 2022, 23:57

3

4

1,085

by: KarishmaB

17 Apr 2022, 23:46

ER

If a+b+c=62, what is the value of a?

705-805 (Hard) | Algebra, Arithmetic

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

chetan2u

29 Dec 2015, 01:44

10

6

3,727

by: ScottTargetTestPrep

30 Jul 2017, 17:25

ER

If a+b=200 and a<b , is a+b>c+d ? (1) c+d<200 (2)

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

kostyan5

08 Nov 2011, 19:49

37

5

14,123

by: bumpbot

16 Nov 2023, 11:37

ER

If a≠-b, √[(a+2b)/(a+b)]=?

555-605 (Medium) | Fractions and Ratios

555-605 (Medium) | Fractions and Ratios hide tags

MathRevolution

18 Oct 2016, 00:53

1

2

2,316

by: MathRevolution

19 Oct 2016, 23:34

ER

If a=12+12+12+…, and b=13-13-13-…, what is a2+2a+b2-3b?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

MathRevolution

13 May 2020, 03:34

6

3

1,916

by: NiftyNiffler

15 May 2020, 07:44

ER

If a0, how many solutions does the equation a(x + b)^2 + c = 0 have?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

04 Jan 2024, 02:30

4

2

1,322

by: Aryaa03

05 Jan 2024, 03:13

ER

If a1, a2, a3, ..., an, ... is a sequence such that an = 2n

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

eybrj2

28 Mar 2012, 01:57

45

9

22,151

by: Bunuel

26 Aug 2025, 10:11

ER

If Aaliyah eats at a constant rate, will Aaliyah have enough time to

655-705 (Hard) | Work and Rate Problems

655-705 (Hard) | Work and Rate Problems hide tags

Bunuel

08 Oct 2025, 00:26

8

3

1,108

by: haianh

20 Nov 2025, 03:17

ER

If Aaron, Lee, and Tony have a total of $36, how much money

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

18 Feb 2014, 03:41

15

6

13,813

by: totaltestprepNick

25 Feb 2026, 16:17

ER

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

805+ (Hard) | Absolute Values +2 tags

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

Bunuel

03 Jul 2020, 01:59

29

15

7,316

by: bumpbot

10 Aug 2022, 11:57

ER

If ab > 0, does (a - 2)(b - 2) = 4 ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

WoundedTiger

15 Aug 2013, 02:22

11

6

4,979

by: bumpbot

25 Feb 2025, 14:01

ER

If ab > 0, is a^2b^3 > 0?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

14 Mar 2023, 11:00

1

769

by: gmatophobia

14 Mar 2023, 13:53

ER

If ab > 0, is a^3b^2 > 0? (1) a > 0 (2) b > 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

30 Dec 2022, 13:40

1

1,325

by: gmatophobia

30 Dec 2022, 22:43

ER

If ab > 0, is ab^2 > 0 ? (1) a > 0 (2) b > 0

605-655 (Medium) | Inequalities

605-655 (Medium) | Inequalities hide tags

Bunuel

21 Jan 2023, 04:29

1

1,067

by: RohitKakkar

21 Jan 2023, 05:10

ER

If ab > 0, what is the value of (a + b)2 (1) a2 = 4 (2) b2 = 1

505-555 (Easy) | Algebra

505-555 (Easy) | Algebra hide tags

niteshwaghray

23 May 2017, 12:14

3

3,071

by: MHIKER

12 Jan 2021, 13:26

ER

If ab > 9, is a < 1? (1) b < 9 (2) 1 < b < 8

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

27 Feb 2017, 22:10

3

5

2,332

by: bumpbot

22 Jan 2020, 09:14

ER

If ab >0, is (ab)^2 < (ab)^(1/2) ?

805+ (Hard) | Inequalities

805+ (Hard) | Inequalities hide tags

Abhi077

16 Feb 2019, 03:18

9

5

2,645

by: exc4libur

31 Aug 2019, 09:32

ER

If ab < 7, is b < 1?

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

BabySmurf

17 Jan 2014, 04:25

5

3

5,296

by: bumpbot

10 Aug 2023, 12:10

ER

If ab < ac, which is greater b or c ? (1) a < 0 (2) c < 0

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Riju1191

01 Jan 2011, 12:48

7

12

8,554

by: bumpbot

24 Jun 2019, 15:41

ER

If ab # 0, is a/b < 1?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

05 Dec 2016, 02:59

2

1,674

by: SI777

05 Dec 2016, 05:45

ER

If ab = -9, what is the value of ab(a + b)?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Bunuel

09 Dec 2019, 01:04

4

2,474

by: ShankSouljaBoi

12 Jan 2020, 08:02

ER

If ab ≠ 0 and ax – by < 0, is x < y ? (1) a = b (2) a^3 > 0

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

Bunuel

08 Sep 2021, 04:00

17

8

4,134

by: bumpbot

16 Jun 2025, 08:38

ER

If ab ≠ 0, and (x + a)(x + b) = 0, is x = a ? (1) x − b = 0 (2) a = -b

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

Bunuel

26 Feb 2021, 01:15

9

6

3,248

by: bumpbot

04 Oct 2023, 12:08

ER

If ab ≠ 0, does a = b?

555-605 (Medium) | Algebra, Exponents

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

Bunuel

01 Apr 2016, 03:30

25

11

7,290

by: bumpbot

06 Dec 2023, 09:55

ER

If ab ≠ 0, does a=b?

605-655 (Medium) | Algebra, Exponents

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

1, 2

gmattokyo

11 Oct 2013, 03:27

34

21

15,029

by: sanyasanha

08 Feb 2023, 21:14

ER

If ab = 0, is |a - b| > 0? (1) a = 0 (2) b < 0

555-605 (Medium) | Absolute Values, Inequalities

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

Bunuel

19 Mar 2023, 08:30

2

1,189

by: gmatophobia

20 Mar 2023, 23:27

ER

If ab ≠ 0, is a^4 + 1/a^2 + a^{−2} = 1 + b^{−2}/b^{−2} + b^{−4}? 1) a

655-705 (Hard) | Algebra, Exponents

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

Russ19

18 Apr 2021, 01:34

3

2

1,460

by: Kinshook

18 Apr 2021, 02:34

ER

If ab ≠ 0, is ab > a/b ?

805+ (Hard) | Absolute Values, Inequalities

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

gmatquant25

25 May 2014, 12:32

289

18

34,148

by: bumpbot

03 Oct 2024, 06:51