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

79,381

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

858

24

188,918

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

488,583

by: bb

29 Aug 2025, 13:27

ER

A merchant discounted the sale price of a coat and the sale price of a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

16 Oct 2018, 02:19

18

3

4,388

by: bumpbot

15 May 2026, 20:46

ER

A playgroup is made up entirely of n pairs of siblings, including the

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

Bunuel

28 Dec 2022, 09:00

12

3

2,387

by: gullyboy09

15 May 2026, 01:52

ER

A certain shipment of identical cans of soup can be packed either into

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

29 Oct 2015, 01:26

13

4

4,082

by: bumpbot

13 May 2026, 08:55

ER

If B is a set of real numbers, is there a number in B that

655-705 (Hard) | Statistics and Sets Problems

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

battleprof

23 Apr 2013, 09:46

11

17

8,779

by: bumpbot

13 May 2026, 08:02

ER

Does it benefit a company overall to invest in employee training?

655-705 (Hard) | Non-Math Related

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

1, 2

guddo

13 Aug 2024, 01:26

128

20

11,749

by: GulfTube

13 May 2026, 07:17

ER

If there is a bag containing less than 30 balls, how many of them are

655-705 (Hard) | Probability, Word Problems

655-705 (Hard) | Probability, Word Problems hide tags

chetan2u

23 Nov 2017, 06:16

11

8

3,174

by: chetan2u

13 May 2026, 04:17

ER

Each of the 45 books on a shelf is written either in English or in Spa

655-705 (Hard) | Overlapping Sets, Probability

655-705 (Hard) | Overlapping Sets, Probability hide tags

AJ1012

23 Dec 2015, 14:16

403

15

54,911

by: bumpbot

13 May 2026, 03:31

ER

During a penalty-scored trivia challenge, Sophia worked through a set

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

10 May 2026, 19:00

4

5

255

by: pappal

12 May 2026, 13:04

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There is at least one viper and at least one cobra in Pandora's box.

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

10 Jul 2025, 10:32

59

9

7,182

by: NidhiYad

11 May 2026, 00:04

ER

If "x" denotes the greatest integer less than or equal to x

655-705 (Hard) | Functions and Custom Characters, Sequences

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

jfdelgado

21 May 2018, 10:00

16

10

5,407

by: bumpbot

10 May 2026, 23:30

ER

Of the students in a certain math class, each student either is a math

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

12 Aug 2024, 01:30

8

4

1,617

by: bumpbot

10 May 2026, 08:51

ER

The table below shows the numbers of four pastry box types sold by

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

05 May 2026, 19:00

4

284

by: Bunuel

09 May 2026, 02:45

ER

In a basketball game, both Heather and Irene scored 30 baske

655-705 (Hard) | Percent and Interest Problems, Word Problems

655-705 (Hard) | Percent and Interest Problems, Word Problems hide tags

kevincan

10 Apr 2026, 13:23

4

5

516

by: Mathewseldo

08 May 2026, 03:12

ER

At two specialty food stalls, Green Market and Riverside Market, the

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

04 May 2026, 19:00

3

4

277

by: Bunuel

08 May 2026, 01:45

ER

A company produces a certain toy in only 2 sizes, small or large, and

655-705 (Hard) | Fractions and Ratios, Word Problems

655-705 (Hard) | Fractions and Ratios, Word Problems hide tags

Bunuel

26 Apr 2019, 02:51

390

16

45,658

by: Adit_

05 May 2026, 01:53

ER

Each type A machine fills 400 cans per minute, each Type B machine

655-705 (Hard) | Work and Rate Problems

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

AbdurRakib

24 Jun 2016, 12:36

429

17

46,696

by: Gmat860sanskar

04 May 2026, 10:02

ER

If x is a positive integer, then is x prime? (1) 3x + 1 is prime

655-705 (Hard) | Number Properties

655-705 (Hard) | Number Properties hide tags

Bunuel

11 Mar 2026, 11:02

411

15

64,454

by: Saurav1408

04 May 2026, 08:19

ER

A certain jar contains only b black marbles, w white marbles and r red

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

anilnandyala

16 Nov 2010, 06:43

300

17

45,878

by: bumpbot

03 May 2026, 08:10

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

2,454

by: bumpbot

02 May 2026, 09:52

ER

A neighborhood library purchased 45 paperback copies of a novel at an

655-705 (Hard) | Statistics and Sets Problems, Word Problems

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

Bunuel

29 Apr 2026, 19:00

4

266

by: Bunuel

02 May 2026, 01:30

Brian works as a consultant. His only work comes from three companies

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

abhiramkrishna

01 May 2026, 10:50

4

1

222

by: dhruv23320

01 May 2026, 19:15

ER

A publishing company allocated its entire annual operating budget

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

Bunuel

28 Apr 2026, 19:00

4

233

by: Bunuel

01 May 2026, 03:00

ER

At a museum, all visitors in a certain tour group were either students

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

27 Apr 2026, 19:00

5

4

268

by: Bunuel

01 May 2026, 01:30

ER

Material A costs $3 per kilogram, and Material B costs $5 per kilogram

655-705 (Hard) | Mixture Problems

655-705 (Hard) | Mixture Problems hide tags

1, 2

alltimeacheiver

05 Aug 2017, 00:16

626

24

91,384

by: Usernamevisible

01 May 2026, 01:06

ER

A certain one-day seminar consisted of a morning session and

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

adarsh12345

01 Sep 2019, 13:33

295

19

68,837

by: bumpbot

30 Apr 2026, 19:36

ER

The 50 participants of a management training seminar ate dinner at a

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

08 Aug 2023, 10:00

153

12

32,080

by: Siddharth17

30 Apr 2026, 05:20

ER

At a water-treatment facility, a pump was used to fill an empty

655-705 (Hard) | Work and Rate Problems

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

Bunuel

23 Apr 2026, 19:00

4

292

by: Bunuel

30 Apr 2026, 03:30

ER

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

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

Bunuel

22 Apr 2026, 19:00

4

3

272

by: Bunuel

30 Apr 2026, 02:45

ER

$20,000 was deposited into bank, with interest compounded quarterly.

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

frombelarus

19 Apr 2020, 11:41

17

4

3,775

by: bumpbot

29 Apr 2026, 09:29

ER

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

655-705 (Hard) | Fractions and Ratios, Percent and Interest Problems

655-705 (Hard) | Fractions and Ratios, Percent and Interest Problems hide tags

Bunuel

21 Apr 2021, 06:30

9

3

2,196

by: bumpbot

29 Apr 2026, 07:33

ER

Cyclist A leaves point X at 12 noon and travels at constant velocity

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

Bunuel

14 Jan 2018, 06:45

13

7

5,001

by: bumpbot

29 Apr 2026, 07:20

ER

A group of 10 athletes was competing in a marathon race. If the range

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

07 Nov 2019, 03:23

6

3,774

by: bumpbot

29 Apr 2026, 06:56

ER

A certain income tax is graduated according to the table above. For

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

27 Feb 2024, 12:16

59

7

11,153

by: bumpbot

29 Apr 2026, 02:52

ER

Maya and Leo are digitizing a set of archival files. Working together

655-705 (Hard) | Work and Rate Problems

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

Bunuel

21 Apr 2026, 19:00

6

5

341

by: Bunuel

29 Apr 2026, 02:30

ER

A courier company assigned each of its drivers to exactly one of three

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

21 Apr 2026, 19:00

2

5

293

by: Bunuel

29 Apr 2026, 01:15

ER

When Oswaldo was promoted, he expected his salary to increas

655-705 (Hard) | Percent and Interest Problems, Word Problems

655-705 (Hard) | Percent and Interest Problems, Word Problems hide tags

kevincan

20 Mar 2026, 04:11

2

481

by: adconsectetur

27 Apr 2026, 09:35

ER

If the terms of a sequence with even integers are a1, a2, a3, . . . ,

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

Bunuel

26 May 2016, 11:09

9

6

4,358

by: bumpbot

27 Apr 2026, 04:40

ER

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

1,741

by: Harsh_

26 Apr 2026, 11:43

ER

Georges Gas Station gets fuel from two different fuel suppliers

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

19 Jan 2026, 03:45

4

2

488

by: Edskore

26 Apr 2026, 05:25

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

8,712

by: keshubhturakhia

26 Apr 2026, 04:50

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

291

by: Bunuel

26 Apr 2026, 02:30

ER

Two cyclists are racing up a mountain at different constant rates. Cyc

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

Bunuel

24 Aug 2016, 07:22

20

7

5,042

by: bumpbot

25 Apr 2026, 09:31

ER

Elena, Marco, and Sofia each had one folder to copy to an external

655-705 (Hard) | Non-Math Related, Word Problems

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

Bunuel

12 Apr 2026, 19:00

5

11

488

by: BPranav7

24 Apr 2026, 09:34

ER

A collector plans to take 4 of his cars to an auto show. How many cars

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

24 May 2024, 01:30

13

5

2,691

by: bumpbot

24 Apr 2026, 01:32

ER

Cars Y and Z travel side-by-side at the same rate of speed along paral

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

Bunuel

06 Mar 2023, 00:15

131

12

18,324

by: bumpbot

24 Apr 2026, 00:07

ER

Yesterday it rained in Baronia. Did it rain in Dukia?

655-705 (Hard) | Non-Math Related

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

Bunuel

21 May 2016, 03:47

68

7

15,703

by: Bunuel

23 Apr 2026, 11:01

ER

To receive a driver license, sixteen year-olds at Culliver High School

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

iamba

01 Jul 2007, 09:43

84

15

20,115

by: bumpbot

23 Apr 2026, 08:57

ER

On a fishing expedition, a group of 13 fishermen caught a total of 160

655-705 (Hard) | Min-Max Problems, Statistics and Sets Problems

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

shasadou

02 Apr 2016, 03:59

82

16

17,301

by: KarishmaB

23 Apr 2026, 02:46

ER

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

300

by: Bunuel

23 Apr 2026, 01:45

ER

A typist typed complete pages of several books in a day. If he typed

655-705 (Hard) | Work and Rate Problems

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

Bunuel

06 Aug 2024, 01:30

19

7

3,352

by: Adit_

22 Apr 2026, 06:00