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

78,629

by: thisisakr

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

854

24

188,465

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

487,848

by: bb

29 Aug 2025, 13:27

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

13,722

by: bumpbot

30 Jul 2024, 00:21

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

4,969

by: bumpbot

14 Dec 2023, 10:15

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

6,981

by: bumpbot

16 Aug 2022, 10:41

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

4,141

by: bumpbot

16 Apr 2020, 02:11

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

3,664

by: Archit3110

08 Apr 2019, 00:26

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

14,903

by: bumpbot

19 Nov 2014, 11:32

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

9,800

by: Bunuel

20 Oct 2025, 10:08

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

8,461

by: bumpbot

22 Sep 2025, 16:11

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

8,296

by: bumpbot

24 Jan 2023, 08:15

ER

Is x < y?

655-705 (Hard) | Algebra

655-705 (Hard) | Algebra hide tags

Puneethrao

01 Nov 2013, 01:01

14

8

6,274

by: bumpbot

20 Jul 2025, 19:19

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

31,040

by: totaltestprepNick

04 Mar 2026, 11:24

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

25,412

by: bumpbot

14 Oct 2025, 23:57

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

19

7

15,413

by: bumpbot

25 Jun 2025, 05:07

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

23,112

by: bumpbot

20 Jan 2026, 11:32

ER

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

2,317

by: bumpbot

20 Jul 2025, 23:26

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

705-805 (Hard) | Work and Rate Problems hide tags

ProfChaos

25 Nov 2020, 19:26

16

5

3,836

by: bumpbot

03 Mar 2024, 00:45

ER

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

1,212

by: ProfChaos

19 Nov 2020, 22:01

ER

Find the 1st term of the Arithmetic Progression?

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ProfChaos

15 Nov 2020, 07:47

1

3

1,403

by: IanStewart

16 Nov 2020, 07:12

ER

The number 14x52y is divisible by 11.

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ProfChaos

15 Nov 2020, 08:00

1

6

1,424

by: Bunuel

15 Nov 2020, 12:04

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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

1,444

by: KarishmaB

15 Sep 2020, 22:10

ER

If P is sequence of n positive integers,

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Probus

25 Apr 2019, 22:55

4

3

1,782

by: bumpbot

28 Jan 2026, 03:13

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

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

81,202

by: rak08

28 May 2025, 03:54

ER

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

2,933

by: bumpbot

16 Mar 2026, 05:01

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

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

705-805 (Hard) | Multiples and Factors

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PriyankaPalit7

17 Mar 2019, 04:17

9

4

3,885

by: bumpbot

06 Jul 2025, 22:39

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

8,607

by: bumpbot

18 Jun 2025, 13:30

ER

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

9,071

by: bumpbot

02 Jan 2025, 05:57

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

2,958

by: bumpbot

13 May 2024, 22:12

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

2,546

by: bumpbot

13 Feb 2022, 07:59

ER

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

655-705 (Hard) | Inequalities

655-705 (Hard) | Inequalities hide tags

PriyankaPalit7

19 Oct 2018, 09:42

4

5

3,058

by: bumpbot

27 Jan 2022, 23:19

ER

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 x² - y > 1/y² where y is non-zero?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

PriyankaPalit7

19 Oct 2018, 02:49

7

12

2,277

by: KarishmaB

10 Oct 2019, 03:34

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

1,515

by: GMATinsight

04 May 2019, 00:14

ER

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

3,524

by: chetan2u

25 Apr 2019, 00:46

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

ER

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

1,301

by: Bunuel

17 Dec 2022, 08:53

ER

An increasing sequence of P

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

PriyamRathor

13 Dec 2022, 23:48

1

2

1,139

by: SaquibHGMATWhiz

14 Dec 2022, 08:10

ER

M, a three digit positive number, can be expressed as 100a + 10b + c

605-655 (Medium) | Multiples and Factors

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

PriyamRathor

07 Dec 2022, 00:25

2

1,865

by: chetan2u

07 Dec 2022, 05:07

ER

The sequence of four numbers a1, a2 , a3 and a4 is such that

505-555 (Easy) | Arithmetic, Sequences

505-555 (Easy) | Arithmetic, Sequences hide tags

pritishmohan

18 May 2013, 01:25

69

10

19,351

by: bumpbot

29 Apr 2024, 08:42

ER

In a certain high school graduating class, 60 percent of the students.

705-805 (Hard) | Overlapping Sets

705-805 (Hard) | Overlapping Sets hide tags

Pritishd

19 Oct 2017, 02:39

15

9

5,350

by: bumpbot

17 Dec 2023, 11:40

ER

A circle is inscribed in equilateral triangle XYZ, which is itself

605-655 (Medium) | Geometry

605-655 (Medium) | Geometry hide tags

Pritishd

14 Sep 2017, 03:35

15

4

3,643

by: bumpbot

16 Jul 2023, 14:59

ER -1

Is f(pq) = f(p) * f(q) for all positive integers values of p and q?

655-705 (Hard) | Functions and Custom Characters

655-705 (Hard) | Functions and Custom Characters hide tags

Pritishd

20 Sep 2020, 08:10

13

4

5,209

by: TBT

20 Mar 2023, 00:01

ER

The shaded portion represents what percent of the area?

705-805 (Hard) | Geometry

705-805 (Hard) | Geometry hide tags

Pritishd

31 Aug 2020, 08:01

13

5

4,608

by: bumpbot

19 Dec 2022, 01:05

ER

Is p greater than q?

705-805 (Hard) | Inequalities

705-805 (Hard) | Inequalities hide tags

Pritishd

15 Aug 2020, 08:40

9

2

3,597

by: Bunuel

15 Aug 2020, 09:05

ER

Let f(x)=ax^2+bx+c, what is the sum of the roots of f(x)=0?

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prithviraj99

26 May 2022, 13:18

2

1,519

by: AndrewN

27 May 2022, 12:32

ER

Is product 2*x*5*y an even integer? 1.2 + x + 5 + y is an

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

1, 2

prinits

29 May 2009, 04:53

104

20

13,979

by: bumpbot

31 May 2023, 13:50

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

2,121

by: bumpbot

14 Jan 2026, 23:19

ER

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

605-655 (Medium) | Inequalities

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Princ

26 Oct 2018, 10:33

6

3

1,920

by: chetan2u

20 Jan 2024, 11:38

ER

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

605-655 (Medium) | Remainders

605-655 (Medium) | Remainders hide tags

Princ

01 Aug 2018, 05:08

14

4

3,726

by: bumpbot

09 Sep 2023, 21:59