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

79,120

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

188,758

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

488,341

by: bb

29 Aug 2025, 13:27

ER

Each M-type unit will increase the base memory capacity of a certain

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

01 Oct 2015, 01:51

48

5

13,190

by: punwani7

21 Feb 2025, 12:49

ER

If c is a positive integer less than 10 and n = 9446 + c, then what is

555-605 (Medium) | Multiples and Factors

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

Bunuel

16 Jul 2015, 01:18

8

9

5,590

by: bumpbot

22 Feb 2025, 03:21

ER

What is the value of x/2 ? (1) x is 1/5 less than 9/10 (2) x is

Sub 505 (Easy) | Arithmetic

Sub 505 (Easy) | Arithmetic hide tags

Bunuel

23 Sep 2022, 01:30

2

3,360

by: bumpbot

22 Feb 2025, 03:36

ER

b, c, d, e, f and g are different positive integers. When b is divided

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

BrentGMATPrepNow

17 Sep 2019, 06:36

91

15

9,374

by: bumpbot

22 Feb 2025, 04:56

ER

Three completely unmarked containers are used for measuring water. Wat

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

03 Nov 2014, 09:04

41

8

12,466

by: Fungano

22 Feb 2025, 09:31

ER

What is the selling price of the mixture if the ratio of the two qual

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

21 Jul 2021, 05:30

2

2,210

by: bumpbot

22 Feb 2025, 09:45

ER

If n ≠ k, k ≠ 0, n ≠ -2, and n and k are integers, is 1/(n−k)>0?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Bunuel

25 Apr 2016, 04:02

10

4

5,517

by: bumpbot

22 Feb 2025, 12:52

ER

At a certain clothing store, customers who buy 2 shirts pay the regula

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

GMATinsight

22 Apr 2020, 00:53

340

19

51,699

by: Udniez

22 Feb 2025, 13:02

ER

In the correctly-worked multiplication problem above, each

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

WoundedTiger

02 Aug 2014, 22:42

124

7

20,703

by: bumpbot

22 Feb 2025, 19:37

ER

Is w an integer?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

19 May 2016, 03:30

23

8

13,514

by: bumpbot

22 Feb 2025, 22:43

ER

In a rectangular coordinate system, are the points (x, y) and (w, z)

705-805 (Hard) | Absolute Values, Geometry

705-805 (Hard) | Absolute Values, Geometry hide tags

Bunuel

21 Jun 2021, 01:30

14

5

2,765

by: bumpbot

23 Feb 2025, 03:05

ER

Both a, b, and c are 3-digits integers, where a=b+c. Is the

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

LM

26 Jan 2012, 06:34

45

8

14,494

by: bumpbot

23 Feb 2025, 04:25

Kim sold five shirts in a day in her shop. What was the profit percent

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

amanvermagmat

05 Jun 2018, 11:26

4

3

2,997

by: bumpbot

23 Feb 2025, 04:50

ER

If the average (arithmetic mean) of four different positive integers

655-705 (Hard) | Statistics and Sets Problems

655-705 (Hard) | Statistics and Sets Problems hide tags

Bunuel

06 Oct 2021, 01:30

6

4

6,305

by: bumpbot

23 Feb 2025, 04:57

ER

Assume that all positive integers are colored either red or blue. If a

655-705 (Hard) | Algebra +2 tags

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

BillyZ

22 Feb 2017, 22:58

60

4

7,163

by: bumpbot

23 Feb 2025, 04:59

ER

If p and q are integers, Is pq > 0?

655-705 (Hard) | Algebra, Exponents

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

kiran120680

01 May 2019, 09:09

25

8

6,270

by: saynchalk

23 Feb 2025, 11:31

ER

Is the product of a certain pair of integers even?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

holdem

12 May 2014, 12:54

60

8

30,215

by: Bunuel

24 Feb 2025, 06:42

ER

If a^{2/3} - b^{2/3} = 12, then \sqrt[3]{a} + \sqrt[3]{b} = ?

805+ (Hard) | Algebra, Roots

805+ (Hard) | Algebra, Roots hide tags

Bunuel

06 Nov 2014, 09:02

45

9

11,460

by: bumpbot

24 Feb 2025, 07:45

ER

If all of the 100 students that attended the fair rode the Ferris

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

24 Feb 2025, 01:30

7

3

1,026

by: NextstopISB

24 Feb 2025, 08:54

ER

At a particular university with 150 students 70% receive loans and 40%

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

24 Feb 2025, 01:30

7

3

724

by: NextstopISB

24 Feb 2025, 08:55

ER

A drawer contains 36 socks, and 2 socks are selected at

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Economist

25 Oct 2009, 05:13

71

11

19,986

by: bumpbot

24 Feb 2025, 10:30

ER

If a and b are positive integers, how many digits does a*b have?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Bunuel

07 Mar 2023, 01:35

4

2

1,818

by: Julioo

24 Feb 2025, 13:12

ER

At a particular university with 200 students 30% receive only loans

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

25 Feb 2025, 01:30

2

1

617

by: ManifestDreamMBA

25 Feb 2025, 01:49

ER

What is the value of t?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

1, 2

Bunuel

16 Jun 2016, 03:26

33

20

25,938

by: bumpbot

25 Feb 2025, 03:56

What is the GCD of a and b?

705-805 (Hard) | Multiples and Factors

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

PrepTap

25 Feb 2025, 07:15

15

5

4,125

by: bumpbot

25 Feb 2025, 07:03

ER

Out of the total boys and girls in a class, 45% are boys and 25% are

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

amanvermagmat

11 May 2018, 11:27

15

4

3,105

by: bumpbot

25 Feb 2025, 07:19

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

13,125

by: bumpbot

25 Feb 2025, 09:44

ER

If m, n are positive integers, what is the value of mn?

605-655 (Medium) | Multiples and Factors

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

Bunuel

23 Sep 2023, 08:15

4

2

1,538

by: Mahi2804

25 Feb 2025, 09:57

ER

David has 3 credit cards: a Passport card, an EverywhereCard and an

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

29 Feb 2024, 02:30

2

1,870

by: luigilosito

25 Feb 2025, 10:01

ER

If x < y, is x^2 < y^2 ?

555-605 (Medium) | Inequalities

555-605 (Medium) | Inequalities hide tags

Bunuel

24 Feb 2014, 01:59

34

6

9,580

by: bumpbot

25 Feb 2025, 11:54

ER

If x and y are nonzero integers, is x^y < y^x ?

605-655 (Medium) | Algebra +2 tags

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

Bunuel

27 Oct 2005, 16:28

231

11

34,364

by: bumpbot

25 Feb 2025, 13:36

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

5,007

by: bumpbot

25 Feb 2025, 14:01

ER

A companys health plan has a deductible of $1,200,

805+ (Hard) | Fractions and Ratios +2 tags

805+ (Hard) | Fractions and Ratios, Percent and Interest Problems, Word Problems hide tags

MartyMurray

07 Mar 2026, 09:22

11

2

1,386

by: MartyMurray

25 Feb 2025, 15:56

ER

A number can be considered “purple” if it halfway between two perfect

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

09 Apr 2018, 01:57

28

16

7,450

by: bumpbot

25 Feb 2025, 22:07

ER

If y is a positive integer, is 3y odd? (1) y + 319 is even (2) y is n

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

Bunuel

01 Oct 2019, 07:39

3

2

1,991

by: bumpbot

25 Feb 2025, 22:14

ER

Jason can drive from his home to his office by one of two possible

555-605 (Medium) | Distance and Speed Problems

555-605 (Medium) | Distance and Speed Problems hide tags

Bunuel

26 Feb 2025, 01:30

2

520

by: GMATinsight

26 Feb 2025, 01:46

ER

If University of Virginia's total expenditure for books, periodicals

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

26 Feb 2025, 01:30

2

583

by: GMATinsight

26 Feb 2025, 01:51

ER

If x^2 = y^2, is true that x > 0 ? (1) x = 2y+1 (2) y <= -1

705-805 (Hard) | Algebra, Inequalities

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

1, 2, 3

burnttwinky

20 May 2012, 19:02

270

43

48,484

by: bumpbot

26 Feb 2025, 03:21

ER

Is |xy| > x^2*y^2 ? (1) 0 < x^2 < 1/4 (2) 0 < y^2 < 1/9

505-555 (Easy) | Absolute Values, Inequalities

505-555 (Easy) | Absolute Values, Inequalities hide tags

DelSingh

17 Aug 2013, 12:51

234

19

33,401

by: bumpbot

26 Feb 2025, 07:18

ER

People in a society read three kinds of newspapers, newspaper A or new

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

04 Feb 2025, 01:30

10

6

1,474

by: Spandam

26 Feb 2025, 08:34

ER

If x and y are positive integers, what is the result when the units di

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

Bunuel

20 Apr 2020, 02:42

12

3,233

by: AVMachine

26 Feb 2025, 17:40

ER

If x, y and z are positive integers, is it true that x^2 is divisible

705-805 (Hard) | Multiples and Factors

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

Bunuel

19 Jan 2023, 02:30

9

13

2,478

by: bumpbot

27 Feb 2025, 00:53

ER

What is the value of the integer N?

Sub 505 (Easy) | Inequalities

Sub 505 (Easy) | Inequalities hide tags

nalinnair

23 May 2016, 02:28

27

8

16,675

by: bumpbot

27 Feb 2025, 01:07

ER

The ratio of water and ammonia in solution A is 1 : 4; the ratio of

555-605 (Medium) | Mixture Problems

555-605 (Medium) | Mixture Problems hide tags

Bunuel

02 Jan 2025, 01:30

6

2

1,986

by: Capablanca

27 Feb 2025, 04:14

ER

What is the value of n in the equation - 25 + 19 + n = S ?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

02 Feb 2023, 09:53

29

16

26,253

by: bumpbot

27 Feb 2025, 05:56

ER

What is the standard deviation of 3 products’ prices?

555-605 (Medium) | Statistics and Sets Problems

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

MathRevolution

18 Nov 2016, 01:24

15

5

5,214

by: bumpbot

27 Feb 2025, 08:37

ER

Does x = y? (1) |x| = |y| (2) x^2 = y^2

Sub 505 (Easy) | Absolute Values

Sub 505 (Easy) | Absolute Values hide tags

GMATBusters

01 Nov 2018, 08:10

26

3

8,669

by: bumpbot

27 Feb 2025, 15:00

ER

If m and n are positive integers, what is the value of 3/m + n/4 ?

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

gmatt1476

21 Sep 2019, 19:20

58

10

17,049

by: bumpbot

27 Feb 2025, 18:59

ER

Four houses are on Block B; from east to west the houses belong to the

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

27 Feb 2025, 01:30

3

4

625

by: AVMachine

27 Feb 2025, 19:18

ER

Is a + b = a^2 + b^2? (1) a and b are natural numbers. (2) a > b

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

SukhAgam

26 Feb 2025, 21:21

2

3

1,218

by: Kinshook

28 Feb 2025, 01:22