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

78,690

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

188,503

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

487,914

by: bb

29 Aug 2025, 13:27

ER

A certain wallet contains bills of two denominations, ten-dollar bills

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

24 Jul 2022, 11:45

1

1,264

by: jatin22

24 Jul 2022, 13:39

ER

A certain voting bloc has how many voters?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

21 Jan 2020, 04:18

1

2,312

by: IanStewart

21 Jan 2020, 04:26

ER

A certain two-digit integer x when divided by another integer t yields

505-555 (Easy) | Remainders

505-555 (Easy) | Remainders hide tags

Bunuel

23 May 2020, 08:25

27

7

7,727

by: bumpbot

09 Jan 2026, 01:31

ER

A certain truck uses 1/12 +kv^2 gallons of fuel per mile when its spee

Sub 505 (Easy) | Distance and Speed Problems, Word Problems

Sub 505 (Easy) | Distance and Speed Problems, Word Problems hide tags

1, 2

BrainLab

26 Jul 2021, 08:37

158

20

35,692

by: bumpbot

16 Jul 2025, 04:59

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A certain train traveled from Station A to Station B. Was the train's

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

12 Jun 2020, 01:20

41

17

18,206

by: bumpbot

06 Aug 2025, 11:34

A certain train left City X at 7:00 am and arrived at City Y the same

705-805 (Hard) | Distance and Speed Problems, Work and Rate Problems

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AnuK2222

05 Apr 2025, 23:28

9

1

1,778

by: ccarson

08 Apr 2025, 11:02

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A certain toy store sold 20 toys yesterday, each of which was either

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

20 Nov 2022, 12:30

9

5

2,575

by: egmat

22 Jan 2026, 23:10

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A certain theater has a total of 884 seats, of which 500 are

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

fozzzy

27 Feb 2013, 04:48

43

10

24,231

by: totaltestprepNick

03 Mar 2026, 09:45

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A certain theater has 4 type of seats: stall, side, balcony, and box.

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

arinamdar

02 Jul 2024, 02:53

6

2

3,397

by: bumpbot

20 Aug 2025, 07:34

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

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A certain student sold exactly 40% of all the tickets sold

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

AnkitK

15 Jun 2011, 11:26

17

14

8,002

by: bumpbot

16 Jul 2025, 01:03

ER

A certain straight corridor has four doors, A, B, C and D (in that ord

Sub 505 (Easy) | Arithmetic, Word Problems

Sub 505 (Easy) | Arithmetic, Word Problems hide tags

Bunuel

11 May 2016, 03:20

4

2

15,029

by: bumpbot

16 May 2022, 00:09

ER

A certain store sells two models of cellular phones, M1 and M2, and of

655-705 (Hard) | Overlapping Sets

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Bunuel

19 May 2021, 08:00

3

2

2,703

by: RamseyGooner

25 May 2021, 14:03

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A certain store sells only records and CDs. All CDs cost $7.82, includ

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Nanobotstv

19 Oct 2016, 21:29

23

6

7,311

by: bumpbot

09 Jan 2026, 10:16

ER

A certain store sells chairs individually or in sets of 6. The store

505-555 (Easy) | Percent and Interest Problems

505-555 (Easy) | Percent and Interest Problems hide tags

TomB

18 Apr 2012, 20:52

55

6

16,755

by: MartyMurray

26 Feb 2026, 10:34

ER

A certain store sells a case of milk for x dollars. If the store

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

24 Mar 2025, 00:30

4

920

by: Dereno

24 Mar 2025, 10:56

ER

A certain stadium is currently full to 13/16 of its maximum seating ca

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

22 Sep 2021, 03:30

1

2

2,231

by: bumpbot

10 Apr 2024, 05:21

ER

A certain stadium is currently full to 13/16 of its maximum seating

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

16 Mar 2022, 04:03

2

5,491

by: bumpbot

10 Apr 2024, 05:19

ER

A certain species of bacteria doubles its population every m minutes.

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

13 Apr 2018, 02:07

7

6

5,346

by: bumpbot

28 Sep 2025, 08:35

ER

A certain ski shop sold 125 pairs of skis and 100 pairs of ski boots

Sub 505 (Easy) | Statistics and Sets Problems, Word Problems

Sub 505 (Easy) | Statistics and Sets Problems, Word Problems hide tags

parkhydel

28 Apr 2020, 04:50

21

3

10,626

by: bumpbot

05 Aug 2025, 05:53

ER

A certain shop only sells items for a whole number of dollars and nine

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

06 Apr 2022, 07:30

17

2

3,276

by: bumpbot

07 Mar 2026, 08:22

ER

A certain shop in a market sells only cherry pies and apple pies

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

05 Dec 2024, 01:30

3

1

1,492

by: stne

06 Dec 2024, 15:17

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

11

3

3,963

by: Hoozan

23 Dec 2020, 01:07

ER

A certain set X contains the number 20. Is the range of the numbers gr

505-555 (Easy) | Statistics and Sets Problems

505-555 (Easy) | Statistics and Sets Problems hide tags

MathRevolution

25 Jan 2017, 05:13

1

3

2,355

by: MathRevolution

27 Jan 2017, 04:17

ER

A certain set S consists of 9 integers. What is the standard deviation

555-605 (Medium) | Statistics and Sets Problems

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

Snehaaaaa

07 Apr 2022, 08:23

1

2

1,383

by: IanStewart

08 Apr 2022, 08:50

ER

A certain section of a library currently has how many books?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

26 Jun 2025, 00:30

5

4

602

by: Dereno

26 Jun 2025, 11:12

ER

A certain school has 250 students. All these students took a psychomet

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Raxit85

11 Feb 2020, 00:04

12

5

4,974

by: vektr

10 Aug 2025, 12:31

ER

A certain salesperson's weekly salary is equal to a fixed base salary

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

GMATD11

21 Feb 2011, 07:31

11

5

8,651

by: bumpbot

09 Feb 2023, 05:50

ER

A certain salesperson earns a total sales commission of d dollars for

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

GMATNinja

13 Feb 2024, 01:15

14

4

2,749

by: bumpbot

06 Dec 2025, 01:00

ER

A certain salesman's yearly income is determined by a base salary plus

705-805 (Hard) | Percent and Interest Problems

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

Bunuel

30 Dec 2024, 01:30

5

3

1,305

by: hr1212

31 Dec 2024, 00:46

ER

A certain salesman's yearly income is determined by a base salary plus

805+ (Hard) | Percent and Interest Problems, Word Problems

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

1, 2

devinawilliam83

25 Jan 2012, 00:22

379

30

50,098

by: bumpbot

18 Jun 2025, 20:59

ER

A certain salesman earns a flat payment of $12 per sale on sales up to

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

05 Aug 2025, 22:00

4

5

659

by: Bunuel

21 Aug 2025, 01:11

ER

A certain salad dressing made only of oil and vinegar is premixed and

Sub 505 (Easy) | Mixture Problems

Sub 505 (Easy) | Mixture Problems hide tags

Bunuel

26 Jul 2016, 09:49

3

5

5,505

by: puneet1997

15 Jun 2020, 08:59

ER

A certain ride has 60 people standing in line awaiting admission. If

805+ (Hard) | Overlapping Sets

805+ (Hard) | Overlapping Sets hide tags

Bunuel

22 Mar 2017, 10:37

63

9

7,869

by: bumpbot

05 Feb 2026, 08:02

ER

A certain restaurant regularly orders tomatoes, pasta, and cheese. The

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

01 Jan 2021, 08:00

2

1

1,914

by: CrackverbalGMAT

07 Jan 2021, 04:43

ER

A certain question bank has 64 GMAT questions. Of these, 22 deal with

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

19 May 2021, 07:30

1

1,185

by: Kinshook

19 May 2021, 08:25

ER

A certain pump working at a constant rate is used to remove rain water

655-705 (Hard) | Work and Rate Problems

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

GMATBusters

14 Mar 2020, 19:35

17

9

4,928

by: Advait01

05 Apr 2026, 07:05

ER

A certain plumber charges $92 for each job completed in 4 hours or

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

26 Jun 2017, 02:31

164

15

39,266

by: ManishaPrepMinds

30 Apr 2025, 04:13

ER

A certain parking lot contains only cars and vans. If the parking lot

555-605 (Medium) | Fractions and Ratios, Word Problems

555-605 (Medium) | Fractions and Ratios, Word Problems hide tags

Bunuel

15 Feb 2024, 02:30

3

2

1,968

by: PranavVyas

15 Feb 2024, 18:06

ER

A certain panel is to be composed of exactly three women and

555-605 (Medium) | Combinations

555-605 (Medium) | Combinations hide tags

1, 2

mariyea

09 Feb 2011, 14:05

129

26

31,203

by: bumpbot

27 Feb 2025, 08:41

ER

A certain painting job requires a mixture of yellow, green, and white

505-555 (Easy) | Fractions and Ratios

505-555 (Easy) | Fractions and Ratios hide tags

Bunuel

26 Apr 2019, 02:43

61

15

22,889

by: bumpbot

16 Jun 2025, 10:06

ER

A certain packing box contains books between 50 to 60. How many books

555-605 (Medium) | Remainders

555-605 (Medium) | Remainders hide tags

quantman3

10 Nov 2011, 20:09

3

6

4,250

by: Bunuel

22 Aug 2016, 01:09

ER

A certain packing box contains books between 50 to 60. How many books

555-605 (Medium) | Remainders, Word Problems

555-605 (Medium) | Remainders, Word Problems hide tags

Bunuel

19 May 2021, 02:30

4

1,711

by: Bunuel

22 May 2021, 02:30

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

293

19

68,587

by: bumpbot

17 Apr 2025, 06:52

ER

A certain office has 6 employees. If R employees

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

BrentGMATPrepNow

24 Oct 2016, 09:36

22

8

6,467

by: bumpbot

06 Jul 2025, 05:43

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 numerical sequence consists of 10 numbers:

505-555 (Easy) | Sequences

505-555 (Easy) | Sequences hide tags

Bunuel

27 Nov 2023, 02:30

1

1,356

by: VibhuAnurag

27 Nov 2023, 12:45

ER

A certain number of people were polled to determine which of three des

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

21 Feb 2024, 02:30

6

2

1,479

by: Shubhradeep

21 Feb 2024, 12:45

ER

A certain number of people were polled to determine which of three

555-605 (Medium) | Fractions and Ratios, Overlapping Sets

555-605 (Medium) | Fractions and Ratios, Overlapping Sets hide tags

Bunuel

14 Jul 2023, 01:30

11

4

2,097

by: bumpbot

26 Sep 2024, 01:10

ER

A certain number of people wait in line at a bank until served.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Nov 2025, 23:43

3

2

487

by: Dereno

18 Nov 2025, 11:32