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

176

15

78,699

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16 Apr 2026, 11:46

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100 Hardest and easiest questions for DS as of March 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,511

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

487,921

by: bb

29 Aug 2025, 13:27

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If x and y are positive integers, is the sum x + y divisible by 4 ?

705-805 (Hard) | Exponents +2 tags

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PriyamRathor

17 Dec 2022, 08:35

4

1

1,302

by: Bunuel

17 Dec 2022, 08:53

Which of X, X^2, and 1/X has the least value? 1). X>0 2). X< 1

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PriyankaPalit7

17 Mar 2019, 07:17

1

995

by: PKN

17 Mar 2019, 08:50

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If k and m are positive integers, what is the remainder when k is divi

805+ (Hard) | Remainders

805+ (Hard) | Remainders hide tags

PriyankaPalit7

23 Apr 2019, 00:21

29

1

3,525

by: chetan2u

25 Apr 2019, 00:46

ER

The figure above shows two right triangles ΔPSR and ΔPRQ that share a

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

PriyankaPalit7

04 May 2019, 00:03

1

1,518

by: GMATinsight

04 May 2019, 00:14

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Is x² - y > 1/y² where y is non-zero?

705-805 (Hard) | Inequalities

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PriyankaPalit7

19 Oct 2018, 02:49

7

12

2,280

by: KarishmaB

10 Oct 2019, 03:34

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What is the value of n? 1). The tens’ digit of 11^n is 4 2). The h

705-805 (Hard) | Exponents

705-805 (Hard) | Exponents hide tags

PriyankaPalit7

20 Mar 2019, 09:31

7

5

2,976

by: bumpbot

18 Jun 2021, 07:11

ER

Is xy < x^2*y^2? (1) xy > 0 (2) x + y = 1

655-705 (Hard) | Inequalities

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PriyankaPalit7

19 Oct 2018, 09:42

4

5

3,061

by: bumpbot

27 Jan 2022, 23:19

If the smallest number in a set of positive integers is 3, how many nu

605-655 (Medium) | Statistics and Sets Problems

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

PriyankaPalit7

21 Mar 2019, 02:37

2

2,548

by: bumpbot

13 Feb 2022, 07:59

ER

Set S and T have 100 numbers, respectively. Is standard deviation of S

655-705 (Hard) | Statistics and Sets Problems

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

PriyankaPalit7

18 Mar 2019, 11:15

5

2

2,959

by: bumpbot

13 May 2024, 22:12

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Symbol * denote to be one of the operations add, subtract, multiply, o

605-655 (Medium) | Number Properties

605-655 (Medium) | Number Properties hide tags

PriyankaPalit7

24 May 2019, 12:39

17

8

9,073

by: bumpbot

02 Jan 2025, 05:57

ER

A seller sells his rice at cost price but uses a faulty weighing machi

705-805 (Hard) | Arithmetic

705-805 (Hard) | Arithmetic hide tags

PriyankaPalit7

23 Apr 2019, 01:25

67

7

8,611

by: bumpbot

18 Jun 2025, 13:30

If n is an integer, is 3^n+1 divisible by 10?

705-805 (Hard) | Multiples and Factors

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

PriyankaPalit7

17 Mar 2019, 04:17

9

4

3,887

by: bumpbot

06 Jul 2025, 22:39

Is d greater than or equal to 0? 1). d is the median of d, 1/d, -d 2).

805+ (Hard) | Statistics and Sets Problems

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

PriyankaPalit7

18 Mar 2019, 10:38

36

7

5,227

by: bumpbot

30 Sep 2025, 13:34

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Is d > 1 (1) Median of d, -d, 1/d is d. (2). Median of d d^2 d^3 i

655-705 (Hard) | Statistics and Sets Problems

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

PriyankaPalit7

18 Mar 2019, 10:43

5

4

2,936

by: bumpbot

16 Mar 2026, 05:01

ER

When positive integer n is divided by 3, the remainder is 2; and when

705-805 (Hard) | Remainders

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1, 2

priyankurml

08 Sep 2023, 08:00

337

20

81,239

by: rak08

28 May 2025, 03:54

ER

If m is a positive integer, is m a perfect square.

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

Probus

30 Aug 2018, 11:03

2

3

1,881

by: fskilnik

30 Aug 2018, 06:03

ER

If P is sequence of n positive integers,

655-705 (Hard) | Sequences

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Probus

25 Apr 2019, 22:55

4

3

1,782

by: bumpbot

28 Jan 2026, 03:13

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Find the value of n. (1) The number of factors of n is only two.

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ProfChaos

15 Sep 2020, 21:33

1

2

1,445

by: KarishmaB

15 Sep 2020, 22:10

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The number 14x52y is divisible by 11.

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ProfChaos

15 Nov 2020, 08:00

1

6

1,425

by: Bunuel

15 Nov 2020, 12:04

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Find the 1st term of the Arithmetic Progression?

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ProfChaos

15 Nov 2020, 07:47

1

3

1,406

by: IanStewart

16 Nov 2020, 07:12

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If x, y and z are positive integers, can the value of (x + y

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

ProfChaos

19 Nov 2020, 20:03

4

1,214

by: ProfChaos

19 Nov 2020, 22:01

ER

A works for 6 hours a day and B also works for 6 hours a day. What wil

705-805 (Hard) | Work and Rate Problems

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ProfChaos

25 Nov 2020, 19:26

16

5

3,836

by: bumpbot

03 Mar 2024, 00:45

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If x and y are integers, x≠0 and y≠0, is x2x>y2y ?

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

ProfChaos

03 Aug 2020, 09:12

10

4

2,318

by: bumpbot

20 Jul 2025, 23:26

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

121

15

23,130

by: bumpbot

20 Jan 2026, 11:32

ER

From May 1, 1960, to May 1, 1975, the closing price of a

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Puilunchristin

30 Jan 2013, 04:57

20

7

15,419

by: bumpbot

25 Jun 2025, 05:07

ER

In a demographic study, the population and total income of a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

puma

17 May 2008, 02:55

64

14

25,419

by: bumpbot

14 Oct 2025, 23:57

ER

What was the range of the selling prices of the 30 wallets sold by a

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

puma

19 Jul 2015, 09:05

44

11

31,049

by: totaltestprepNick

04 Mar 2026, 11:24

ER

Is x < y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Puneethrao

01 Nov 2013, 01:01

14

8

6,276

by: bumpbot

20 Jul 2025, 19:19

ER

If n is an non-negative integer is 10^n+8 divisible by 18?

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

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

PUNEETSCHDV

07 May 2023, 05:11

27

3

8,303

by: bumpbot

24 Jan 2023, 08:15

ER

Machines P, Q, and R produce aluminum cans at their respective

605-655 (Medium) | Work and Rate Problems

605-655 (Medium) | Work and Rate Problems hide tags

punit2020

31 Dec 2023, 05:16

44

5

8,471

by: bumpbot

22 Sep 2025, 16:11

ER

A certain nutritional study defined the N-score for one serving of a

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

punit2020

26 Dec 2023, 06:41

61

9

9,807

by: Bunuel

20 Oct 2025, 10:08

ER

A certain sum was invested in a high-interest bond for which

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punyadeep

16 Mar 2011, 07:49

31

15

14,906

by: bumpbot

19 Nov 2014, 11:32

ER

What is the hundreds digit of a three digit number N

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

push12345

14 Jul 2018, 02:00

3

2

3,666

by: Archit3110

08 Apr 2019, 00:26

ER

If a and b are non-zero numbers, is a > b ?

705-805 (Hard) | Absolute Values, Inequalities

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

push12345

15 Nov 2018, 05:54

7

5

4,143

by: bumpbot

16 Apr 2020, 02:11

ER

If a & b are positive integers, , is a/b a terminating decimal number?

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

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

push12345

07 Nov 2018, 01:18

13

9

6,987

by: bumpbot

16 Aug 2022, 10:41

ER

If a = n!, what is value of n ?

555-605 (Medium) | Number Properties

555-605 (Medium) | Number Properties hide tags

push12345

08 Nov 2018, 10:49

18

9

4,973

by: bumpbot

14 Dec 2023, 10:15

ER

Is |a - b| < |a| + |b| ? (1) ab< 0 (2) a^b < 0

655-705 (Hard) | Absolute Values, Inequalities

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

push12345

15 Oct 2018, 07:21

39

9

13,724

by: bumpbot

30 Jul 2024, 00:21

ER

If p and q are integers, is p^q >1 ? (1) pq < 0 (2) q^p < 1

655-705 (Hard) | Exponents, Inequalities

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

push12345

02 Oct 2018, 06:07

24

6

7,536

by: bumpbot

26 Jun 2025, 22:22

ER

If p and q are positive integers, is p > q?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

pushkarajnjadhav

22 Aug 2017, 13:33

9

3

4,241

by: bumpbot

25 Jan 2026, 00:19

ER

Is the positive integer N a prime number?

555-605 (Medium) | Multiples and Factors

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pushpitkc

30 Sep 2017, 10:26

2

2,627

by: MathRevolution

01 Oct 2017, 14:09

ER

The figure shows a rectangle with a triangle inscribed in it

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

pushpitkc

24 Nov 2018, 23:34

3

2,874

by: chetan2u

24 Nov 2018, 23:52

ER

Is x > 0? (1) |3 - x| < |x + 5| (2) |3 - 2x| < x - 1

655-705 (Hard) | Absolute Values, Inequalities

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

pushpitkc

27 Dec 2017, 11:16

8

7

2,968

by: bumpbot

03 Dec 2019, 20:15

ER

What is the remainder when 6^x is divided by 10

505-555 (Easy) | Number Properties, Remainders

505-555 (Easy) | Number Properties, Remainders hide tags

pushpitkc

28 Nov 2017, 11:14

9

5

4,755

by: TBT

24 Jan 2023, 00:54

ER

a, b, c, and d lie on the number line such that a < b.

555-605 (Medium) | Coordinate Plane

555-605 (Medium) | Coordinate Plane hide tags

pushpitkc

23 Aug 2018, 00:36

14

7

4,793

by: bumpbot

13 Aug 2023, 04:37

ER

If p,q are distinct and greater than 1, p + q =

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

pushpitkc

02 Mar 2019, 01:26

10

5

3,421

by: bumpbot

07 Jan 2024, 02:26

ER

What is the value of p+q?

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

pushpitkc

15 Nov 2017, 11:03

10

5

9,871

by: bumpbot

05 Aug 2025, 10:20

ER

If P is a positive integer, P= ?

555-605 (Medium) | Number Properties, Remainders

555-605 (Medium) | Number Properties, Remainders hide tags

pushpitkc

14 Sep 2017, 21:06

41

3

6,984

by: bumpbot

21 Aug 2025, 06:06

ER

Of the 90 houses in a certain community, 60 have a garden. How many

705-805 (Hard) | Statistics and Sets Problems

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pushpitkc

16 Oct 2017, 13:47

27

6

6,406

by: bumpbot

07 Sep 2025, 13:33

ER

If p and q are positive integers, is 21^p/630^q a terminating

705-805 (Hard) | Fractions and Ratios

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pushpitkc

01 Jan 2018, 00:02

27

5

5,752

by: bumpbot

22 Sep 2025, 08:32

ER

If p,q and r are positive numbers, does q lie between p and r on the

705-805 (Hard) | Number Properties

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pushpitkc

21 Sep 2017, 00:25

70

9

12,080

by: bumpbot

06 Jan 2026, 01:00