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

79,076

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

188,730

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

488,294

by: bb

29 Aug 2025, 13:27

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An inspection agency follows these guidelines for newly laid pipelines

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

01 Apr 2026, 19:00

8

3

485

by: PlacidSoyabean

22 Apr 2026, 02:30

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At a warehouse, the daily output of Machine Orion is two-thirds of the

555-605 (Medium) | Work and Rate Problems

555-605 (Medium) | Work and Rate Problems hide tags

Bunuel

15 Apr 2026, 19:00

3

248

by: Bunuel

22 Apr 2026, 02:45

ER

There are a number of red beads and white beads in a jar. If Mike were

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

07 Apr 2016, 08:36

12

3

4,415

by: bumpbot

22 Apr 2026, 03:54

ER

A man spends 20% of his income on house rent, 25% of the remaining inc

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

28 Jan 2021, 01:15

11

3

5,751

by: bumpbot

22 Apr 2026, 04:46

ER

Let [x] represent the average of the greatest integer less than or equ

705-805 (Hard) | Functions and Custom Characters

705-805 (Hard) | Functions and Custom Characters hide tags

Bunuel

29 Jan 2021, 01:15

6

3

2,502

by: bumpbot

22 Apr 2026, 04:54

ER

If s is the sequence of more than two observations

805+ (Hard) | Statistics and Sets Problems

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

PyjamaScientist

03 Oct 2021, 00:30

15

3

1,897

by: bumpbot

23 Apr 2026, 01:37

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At a farmers market, Mia, Leo, and Owen each bought some oranges.

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

16 Apr 2026, 19:00

2

3

283

by: Bunuel

23 Apr 2026, 01:45

ER

A reseller bought a vintage floor lamp at a weekend flea market and

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

16 Apr 2026, 19:00

11

3

332

by: Bunuel

23 Apr 2026, 02:45

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In the sequence T, the first term is the non-zero number a, and each

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

Bunuel

06 Dec 2023, 02:30

5

3

1,965

by: Bunuel

25 Apr 2026, 23:49

ER

At a shipping center, every package in a certain batch is either

605-655 (Medium) | Probability

605-655 (Medium) | Probability hide tags

Bunuel

19 Apr 2026, 19:00

5

3

239

by: Bunuel

26 Apr 2026, 01:00

ER

At a community arts festival, each of the 72 volunteers was assigned

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

19 Apr 2026, 19:00

5

3

259

by: Bunuel

26 Apr 2026, 02:30

ER

If 50 people paid a total of $110 for tickets to attend a certain high

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

guddo

24 Jan 2024, 04:15

35

3

8,665

by: keshubhturakhia

26 Apr 2026, 04:50

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Julian had five indoor potted plants, each of which - in order to

655-705 (Hard) | Non-Math Related

655-705 (Hard) | Non-Math Related hide tags

HarshitaV

24 Nov 2025, 09:46

14

3

1,692

by: Harsh_

26 Apr 2026, 11:43

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20 percent of the households in Ruterberg have pets. If 15 percent of

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

13 Dec 2024, 01:30

4

3

1,914

by: bumpbot

26 Apr 2026, 23:48

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What is the average (arithmetic mean) of a sequence of N consecutive

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

Bunuel

22 Sep 2023, 01:30

11

3

2,404

by: Tinytrotter

27 Apr 2026, 06:01

ER

What is the sum of the terms in a certain sequence of consecutive inte

605-655 (Medium) | Sequences

605-655 (Medium) | Sequences hide tags

Bunuel

26 May 2021, 02:01

5

3

2,747

by: GrandGG

28 Apr 2026, 05:53

ER

Do at least 24 percent of Loral business school students aspire to do

705-805 (Hard) | Fractions and Ratios, Percent and Interest Problems

705-805 (Hard) | Fractions and Ratios, Percent and Interest Problems hide tags

Bunuel

21 Apr 2021, 06:30

9

3

2,160

by: bumpbot

29 Apr 2026, 07:33

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The sequence a_1, a_2, a_3, a_4, . . ., consists of positive integers,

705-805 (Hard) | Sequences

705-805 (Hard) | Sequences hide tags

Russ19

15 May 2021, 05:03

5

3

1,745

by: bumpbot

29 Apr 2026, 07:36

ER

A contractor was hired to build a house for $132,000, consisting of

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

ExpertsGlobal5

04 Mar 2026, 20:00

8

3

544

by: Siddharth17

29 Apr 2026, 07:54

ER

For all numbers p and q (where p 0 ), the operation $ is defined as

605-655 (Medium) | Functions and Custom Characters

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

Bunuel

24 Jun 2022, 09:30

4

3

2,067

by: Bunuel

29 Apr 2026, 22:10

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If x_n = a^{(2n-1)}, where n is a positive integer then find sum of th

805+ (Hard) | Functions and Custom Characters +2 tags

805+ (Hard) | Functions and Custom Characters, Number Properties, Sequences hide tags

GMATinsight

27 May 2021, 08:45

5

3

1,636

by: bumpbot

30 Apr 2026, 02:18

ER

A community theater sold tickets for the same show in January and in

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

Bunuel

22 Apr 2026, 19:00

3

226

by: Bunuel

30 Apr 2026, 02:45

ER

The ratio of blue collar workers to white collar workers at Company K

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

06 Jan 2020, 07:10

6

3

12,878

by: bumpbot

30 Apr 2026, 04:10

ER

A neighborhood bakery owner selected some pastries to feature in

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

26 Apr 2026, 19:00

1

3

195

by: Bunuel

30 Apr 2026, 05:15

ER

During lunch service, a snack kiosk sold bread rolls, wraps, bowls of

605-655 (Medium) | Fractions and Ratios, Word Problems

605-655 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

26 Apr 2026, 19:00

1

3

215

by: Bunuel

30 Apr 2026, 06:45

ER

Zachary bought a house, refurbished it, and sold it. Buying and refurb

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

31 Mar 2025, 00:30

13

3

2,398

by: bumpbot

02 May 2026, 09:52

ER

The nth term, where n > 1, in a series S of positive integers is

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

TBT

02 Mar 2023, 00:53

10

3

1,582

by: Bunuel

02 May 2026, 23:29

ER

How long did it take Ms. Nkalubo to drive her family nonstop from her

605-655 (Medium) | Distance and Speed Problems

605-655 (Medium) | Distance and Speed Problems hide tags

Bunuel

12 Feb 2019, 00:47

6

3

2,032

by: bumpbot

05 May 2026, 22:48

ER

Avas desk drawer contains only blue, green, and silver tokens

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

06 May 2026, 19:00

1

3

113

by: BongBideshini

08 May 2026, 03:12

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If y>0 is x>y? 1. 5x-4y=3 2. 4y-5x=3

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Poor Quality hide tags

agnok

17 Jul 2010, 08:21

3

2

4,086

by: agnok

20 Jul 2010, 08:28

ER

Find an integer n?

505-555 (Easy) | Absolute Values, Exponents

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

stolyar

22 May 2003, 01:09

2

5,653

by: Bunuel

16 Aug 2010, 09:55

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[1/a^2+1/a^4+1/a^6+...]>[1/a+1/a^3+1/a^5]

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Poor Quality hide tags

honeyhani

18 Oct 2010, 05:03

3

2

4,062

by: IanStewart

18 Oct 2010, 11:48

ER

A biker travels from point A to Point C in a straight line

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Creeper300

07 Nov 2010, 13:53

2

2,848

by: KarishmaB

08 Nov 2010, 10:04

A right polygon is inscribed in a circle. How many sides

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aalriy

10 Dec 2010, 08:05

1

2

5,006

by: aalriy

10 Dec 2010, 10:58

What percent of x is 3/4?

Sub 505 (Easy) | Percent and Interest Problems

Sub 505 (Easy) | Percent and Interest Problems hide tags

jscott319

11 Dec 2010, 20:03

2

4,973

by: jscott319

11 Dec 2010, 21:18

ER

If c and k are distinct positive integers, is c divisible by

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gmatpapa

24 Jan 2011, 01:01

8

2

3,431

by: gmatpapa

24 Jan 2011, 03:38

In the xy plane, what is the slope of line perpendicular to

655-705 (Hard) | Coordinate Plane

655-705 (Hard) | Coordinate Plane hide tags

DeeptiM

28 Aug 2011, 12:33

4

2

3,134

by: fluke

28 Aug 2011, 13:15

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is (a-b)/c >0? 1. a>b, b<c 2. a<b, b<c

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Creeper300

07 Nov 2010, 13:44

3

2

3,472

by: metallicafan

03 Feb 2012, 11:39

If the market value of a car was $6,000 exactly 3 years ago

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hfbamafan

08 May 2012, 22:28

8

2

10,024

by: chibiutena

09 May 2012, 09:38

X and Y are positive numbers. Is the hundredth digit of XY

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g81

06 Jun 2012, 13:38

1

2

2,433

by: g81

06 Jun 2012, 14:05

Find the number of days in the year X

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

siddharthamaridi

20 Mar 2025, 08:32

2

3,003

by: MacFauz

14 Nov 2012, 02:07

ER

In a class, each of the students were asked to pick an integ

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tabsang

25 Dec 2012, 01:59

2

4,015

by: tabsang

25 Dec 2012, 05:43

Machine A can fill an order of widgets in a hours. Machine B

805+ (Hard) | Work and Rate Problems

805+ (Hard) | Work and Rate Problems hide tags

nshang

22 Jul 2013, 06:25

88

2

30,493

by: Sachin9

16 Jan 2013, 02:08

ER

What is the value of a+b ?

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summer101

02 Jun 2013, 05:07

2

2,047

by: Bunuel

02 Jun 2013, 10:45

ER

Is square root of a positive integer x an integer?

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

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

summer101

03 Jun 2013, 07:14

37

2

9,777

by: Bunuel

05 Jun 2013, 03:07

ER

Five people - Adam, Bob, Craig, Daniel and Evan - are of dif

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Carcass

26 Jun 2013, 18:26

2

2,290

by: Bunuel

26 Jun 2013, 20:31

ER

If x is an integer, is x/2 an even integer ?

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

hb

01 Jan 2016, 06:54

10

2

12,930

by: hb

21 Jul 2013, 07:26

A pencil costs $3 and a pen costs $7. If pens and pencils

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innocous

16 Aug 2013, 08:36

3

2

3,226

by: zerosleep

19 Aug 2013, 07:21

ER

A CEO is building an extra-wide garage in which to park his

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Asifpirlo

21 Aug 2013, 17:56

2

3,622

by: fameatop

22 Aug 2013, 03:10

ER

Is xy > 7 ? (1) x + y = 7 (2) 1 x 3 and 2 y 4

505-555 (Easy) | Inequalities

505-555 (Easy) | Inequalities hide tags

avohden

02 Nov 2013, 00:40

3

2

3,670

by: avohden

05 Nov 2013, 22:42