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

78,582

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

188,436

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

487,784

by: bb

29 Aug 2025, 13:27

ER

A type of candy comes in two flavors, sweet and sour, and in two color

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

28 Oct 2025, 00:18

4

2

627

by: Dereno

28 Oct 2025, 06:25

ER

Jane drove at a constant speed from point A to point B and back to

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

Bunuel

01 Oct 2024, 01:30

11

3

2,577

by: bumpbot

27 Oct 2025, 07:02

ER

Machine J runs at a constant rate and produces a lot consisting of 300

505-555 (Easy) | Work and Rate Problems

505-555 (Easy) | Work and Rate Problems hide tags

Bunuel

27 Oct 2025, 00:48

2

1

601

by: Dereno

27 Oct 2025, 04:40

ER

If bowl S contains only marbles, how many marbles are in bowl S?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

27 Oct 2025, 00:46

2

1

543

by: Dereno

27 Oct 2025, 04:15

ER

What is the probability of picking a blue ball in 2nd pick from a bag

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

chetan2u

13 May 2016, 03:43

30

6

7,922

by: mj12121212

26 Oct 2025, 20:18

ER

Machines Y and Z work at their respective constant rates. If it takes

555-605 (Medium) | Work and Rate Problems

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

Bunuel

13 Jun 2024, 01:30

8

5

1,566

by: bumpbot

26 Oct 2025, 12:55

ER

What was the value of the sales of Pioneer Computers in 1990?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

24 Oct 2025, 01:12

5

3

480

by: Souradeep17

26 Oct 2025, 00:31

ER

Peter works as a teaching assistant and gets paid on a weekly basis.

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

GMATBusters

06 Jun 2020, 19:16

1

12

2,871

by: bumpbot

25 Oct 2025, 23:00

ER

Brian drives a certain part of his journey at an average speed of 30

705-805 (Hard) | Distance and Speed Problems

705-805 (Hard) | Distance and Speed Problems hide tags

Bunuel

23 Mar 2023, 03:30

14

2

2,855

by: bumpbot

25 Oct 2025, 08:56

ER

From a drawer containing black, blue and gray solid-color socks, inclu

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

06 Jan 2020, 07:08

36

5

11,522

by: bumpbot

24 Oct 2025, 22:25

ER

How many of the books on the shelf have blue covers?

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

Bunuel

24 Oct 2025, 01:11

3

550

by: Dereno

24 Oct 2025, 11:08

Is the standard deviation of prices (per share) of 10 stocks less than

605-655 (Medium) | Statistics and Sets Problems

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

rohan2345

12 Jan 2019, 03:40

7

4

2,011

by: Amirgivehei

24 Oct 2025, 10:37

ER

The students in a certain class each joined a club: basketball club

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

02 Sep 2022, 05:33

1

3

2,130

by: Isha2204

24 Oct 2025, 00:48

ER

The number of hardcover books at bookstore X is 67.5% of all the books

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Oct 2025, 02:18

3

2

599

by: samarpan.g28

23 Oct 2025, 09:52

ER

An Opera house has 200 seats of two kinds: Box seats and Stall seats.

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

20 Aug 2024, 01:30

7

3

1,360

by: bumpbot

23 Oct 2025, 03:24

ER

If Bob's age is three times David's age, what is Bob's age?

505-555 (Easy) | Word Problems

505-555 (Easy) | Word Problems hide tags

Bunuel

23 Oct 2025, 00:23

2

554

by: Dereno

23 Oct 2025, 02:23

ER

A florist found that 60% of his customers on Valentine's Day bought

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

23 Oct 2025, 00:22

3

1

548

by: paragw

23 Oct 2025, 00:49

ER

What is the distance from City A to City C in kms?

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

22 Oct 2025, 00:46

3

512

by: Dereno

22 Oct 2025, 12:44

ER

In 2005, did Company A have more than twice the number of employees as

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

22 Oct 2025, 00:45

3

503

by: Dereno

22 Oct 2025, 12:29

ER

What is the probability that an integer chosen from a set P, which con

655-705 (Hard) | Probability +2 tags

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

Bunuel

17 Jul 2017, 23:07

7

2

3,627

by: bumpbot

21 Oct 2025, 09:00

ER

What will be the total weight of 10 poles, each of the same weight ?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

Bunuel

21 Oct 2025, 00:14

3

939

by: Dereno

21 Oct 2025, 04:26

ER

Maria walked along a track at an average speed of 100 meters per

605-655 (Medium) | Distance and Speed Problems

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

Bunuel

21 Oct 2025, 00:13

2

648

by: Dereno

21 Oct 2025, 04:20

ER

In a survey of 150 persons, how many were both smokers and drinkers?

605-655 (Medium) | Overlapping Sets

605-655 (Medium) | Overlapping Sets hide tags

Bunuel

20 Oct 2025, 00:24

1

606

by: paragw

20 Oct 2025, 06:10

ER

If Simon paid 25 cents for each orange and 15 cents for each mango

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

20 Oct 2025, 00:23

1

498

by: paragw

20 Oct 2025, 05:52

P, Q, R are three distinct positive numbers. Which is the greatest

805+ (Hard) | Inequalities, Number Properties

805+ (Hard) | Inequalities, Number Properties hide tags

amanvermagmat

17 Mar 2018, 00:25

10

5

3,213

by: bumpbot

20 Oct 2025, 05:42

ER

A business bought r typewriters at $100 per typewriter and s

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

13 Sep 2024, 01:30

9

4

1,613

by: bumpbot

19 Oct 2025, 19:56

ER

Each type P machine can assemble 240 cars per hour, each type Q

705-805 (Hard) | Work and Rate Problems

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

Bunuel

28 Jun 2024, 01:30

10

4

2,060

by: bumpbot

19 Oct 2025, 09:27

ER

Bo profits $6.06 every time he sells a kebab and $0.79 every time he

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

15 Feb 2023, 00:13

27

2

5,787

by: CareerLauncherIE

18 Oct 2025, 12:37

ER

Last year Charles spent $24,000 total on rare coins, stamps, and books

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

02 Feb 2022, 08:00

3

2

1,919

by: bumpbot

18 Oct 2025, 03:49

ER

Machine A, machine B, and machine C, working together at their respect

555-605 (Medium) | Work and Rate Problems

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

Bunuel

17 Oct 2025, 02:19

3

649

by: CareerLauncherIE

18 Oct 2025, 01:48

ER

Three workers are painting a wall, what is the length of the wall?

555-605 (Medium) | Work and Rate Problems

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

Bunuel

14 Jun 2024, 01:30

6

2

1,594

by: bumpbot

17 Oct 2025, 22:51

ER

Hanna holds a certain number of cards, each of which is green or black

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Bunuel

05 Aug 2024, 01:30

8

2

1,280

by: bumpbot

17 Oct 2025, 21:34

ER

A sequence L is given as l1, l2, l3, , ln, where n is the total

655-705 (Hard) | Sequences

655-705 (Hard) | Sequences hide tags

ktzsikka

24 Dec 2021, 10:44

21

3

5,994

by: bumpbot

17 Oct 2025, 06:39

ER

What is the speed of the boat in still water?

505-555 (Easy) | Distance and Speed Problems

505-555 (Easy) | Distance and Speed Problems hide tags

Bunuel

04 Aug 2021, 04:00

6

2

3,181

by: Balotiyar

16 Oct 2025, 13:25

ER

Is the total price of the three products more than $8.5?

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

31 Jan 2024, 02:30

5

4

1,666

by: bumpbot

16 Oct 2025, 10:58

ER

What percentage of his bills did Stanley pay before their due dates

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

16 Oct 2025, 00:19

4

2

707

by: Dereno

16 Oct 2025, 08:26

ER

Initially, how many black chips are in a box containing only red chips

555-605 (Medium) | Probability

555-605 (Medium) | Probability hide tags

Bunuel

16 Oct 2025, 00:20

3

1

584

by: Dereno

16 Oct 2025, 07:22

Find the standard deviation of 2, 3, K, 5 and 6.

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

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

PrepTap

09 May 2015, 03:02

7

2

3,236

by: bumpbot

16 Oct 2025, 00:21

ER

What is the ratio of the number of burgers to the number of chicken

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

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

Bunuel

15 Oct 2025, 00:25

4

3

552

by: Missinga

15 Oct 2025, 20:07

ER

Tek has two routes that he normally takes when he drives to work.

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

07 Oct 2025, 00:32

7

1,007

by: iamjatinagrawal

15 Oct 2025, 10:24

ER

Piper bought three shirts. The three shirts cost $210 in total

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

15 Oct 2025, 00:26

1

361

by: Dereno

15 Oct 2025, 03:53

ER

The average daily maximum temperature at a certain weather station

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

19 Sep 2024, 01:30

9

2

1,754

by: bumpbot

15 Oct 2025, 01:41

ER

Station Q is to the East of Station T. At 12 noon, a train starts from

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

14 Oct 2025, 00:32

8

6

674

by: Reon

15 Oct 2025, 00:12

ER

Country X imposes a fixed tourist tax of T dollars that adds to a dail

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

27 Dec 2019, 01:34

16

9

3,969

by: bumpbot

14 Oct 2025, 22:13

ER

In a class of 50 students, everyone plays at least one game among base

555-605 (Medium) | Overlapping Sets

555-605 (Medium) | Overlapping Sets hide tags

Bunuel

14 Oct 2025, 00:33

4

546

by: Souradeep17

14 Oct 2025, 17:35

ER

Is the percent of the white collar employees employed at LampCo who ar

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

22 Apr 2020, 03:48

15

2

5,634

by: bumpbot

14 Oct 2025, 06:42

ER

The total price of books A, B, and C is $306. What is the median price

655-705 (Hard) | Statistics and Sets Problems

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

Bunuel

23 Jun 2023, 08:00

9

4

1,788

by: bumpbot

13 Oct 2025, 22:06

ER

Sam's Grocery store sells potatoes only in 5-pound bags and 10-pound

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

13 Oct 2025, 00:44

3

511

by: Reon

13 Oct 2025, 20:20

ER

Yesterday, Tom had only racing cars and robots in toys. Out of the

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

Bunuel

20 Aug 2024, 01:30

6

5

1,336

by: bumpbot

13 Oct 2025, 20:08

ER

The average (arithmetic mean) monthly balance in Company X's petty

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

Bunuel

24 Jun 2017, 12:25

8

2

3,764

by: bumpbot

13 Oct 2025, 11:47