GMAT Data Sufficiency (DS) Forum - Free Practice Questions

ER

Complete 1000 GMAT Data Sufficiency Series (DS-1000 Series) Questions

Bunuel

25 Oct 2022, 08:11

176

15

78,863

by: thisisakr

16 Apr 2026, 11:46

ER

100 Hardest and easiest questions for DS as of April 2026

1, 2

Bunuel

01 Jan 2026, 05:45

856

24

188,610

by: bumpbot

16 Sep 2025, 06:05

ER

DS Question Directory by Topic and Difficulty

bb

29 Aug 2025, 13:27

1.5k

0

488,056

by: bb

29 Aug 2025, 13:27

ER

What is the value of x/(yz) ?

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

10 Sep 2017, 04:51

3

2,795

by: unraveled

21 Oct 2024, 09:33

ER

Are a and b integers? (1) a/b is an integer

505-555 (Easy) | Number Properties

505-555 (Easy) | Number Properties hide tags

eybrj2

24 Feb 2012, 23:25

25

3

9,756

by: bumpbot

20 Oct 2024, 03:07

ER

A zebra must get water from either a stream or pond. Which of the two

555-605 (Medium) | Work and Rate Problems

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

Bunuel

22 Sep 2021, 03:00

5

3

2,402

by: bumpbot

19 Oct 2024, 23:10

ER

If a and b are positive integers and a > b, what is the remainder when

655-705 (Hard) | Remainders

655-705 (Hard) | Remainders hide tags

Bunuel

03 Aug 2023, 01:30

8

3

2,149

by: bumpbot

19 Oct 2024, 22:38

ER

Is the integer n even ? (1) n^2 - 1 is odd (2) n^(1/2) is an integer

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

Bunuel

15 Oct 2022, 08:01

2

3

2,481

by: devarpanc

19 Oct 2024, 05:07

ER

Aaliyah purchased 5 pencils and pens. If each pencil costs 18 cents an

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

05 Apr 2017, 03:24

4

3

4,363

by: bumpbot

18 Oct 2024, 13:57

ER

If t1 and t2 are the numbers of teachers and s1 and s2 are the numbers

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

17 Oct 2024, 01:30

4

3

845

by: Abdelaali91

17 Oct 2024, 14:53

ER

How many people in a society of 500 own both a bike and a car?

655-705 (Hard) | Overlapping Sets

655-705 (Hard) | Overlapping Sets hide tags

Bunuel

07 Oct 2024, 01:30

4

3

1,707

by: pierjoejoe

17 Oct 2024, 03:42

ER

The positive integer y is at a distance of 2 units from the nearest mu

805+ (Hard) | Multiples and Factors, Number Properties

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

Bunuel

13 May 2020, 06:50

14

3

2,662

by: bumpbot

15 Oct 2024, 03:48

ER

A group of six friends noticed that the sum of their ages is the squar

805+ (Hard) | Number Properties, Statistics and Sets Problems

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

dynmoz

15 Aug 2018, 01:08

7

3

3,781

by: bumpbot

14 Oct 2024, 14:10

ER

During a five day charity drive, the least amount of money raised in

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

13 Sep 2024, 01:30

6

3

1,838

by: pierjoejoe

13 Oct 2024, 01:33

The difference between the heights of A and B is twice the difference

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Gmatprep998

28 May 2019, 04:56

8

3

3,092

by: bumpbot

12 Oct 2024, 11:34

ER

What is the remainder when p is divided by 10?

705-805 (Hard) | Remainders

705-805 (Hard) | Remainders hide tags

Bunuel

30 Jul 2017, 22:43

10

3

3,125

by: bumpbot

12 Oct 2024, 06:03

ER

At a company dinner, each of the 56 employees present ate at least one

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

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

amanvermagmat

11 May 2018, 11:38

15

3

2,876

by: bumpbot

12 Oct 2024, 05:50

ER

In a sequence S, each term, after first term,

805+ (Hard) | Sequences

805+ (Hard) | Sequences hide tags

fitzpratik

20 Mar 2019, 20:25

25

3

6,170

by: bumpbot

12 Oct 2024, 04:40

ER

If m, n, and p are digits, is (m + n)/p a digit?

Sub 505 (Easy) | Fractions and Ratios

Sub 505 (Easy) | Fractions and Ratios hide tags

Bunuel

01 Nov 2016, 04:50

4

3

3,036

by: bumpbot

09 Oct 2024, 10:46

ER

The price of martha's meal was $10, and she left a tip that was r

555-605 (Medium) | Percent and Interest Problems

555-605 (Medium) | Percent and Interest Problems hide tags

Bunuel

08 Oct 2024, 01:30

3

1,288

by: prantorboni

08 Oct 2024, 22:17

ER

If the average of three numbers of 2, 5, and x equal to the median, wh

655-705 (Hard) | Statistics and Sets Problems

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

Recon

04 Oct 2020, 05:11

9

3

1,746

by: bumpbot

08 Oct 2024, 08:40

ER

How many people did Apex Company employ in 1990? (1) The company emplo

Sub 505 (Easy) | Algebra, Word Problems

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

GMATBusters

01 Nov 2018, 08:23

6

3

5,750

by: bumpbot

06 Oct 2024, 18:19

ER

In a recent trip, Morris drove from town A to town B and returned back

555-605 (Medium) | Distance and Speed Problems

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

Bunuel

02 Oct 2024, 01:30

4

3

1,076

by: tgsankar10

04 Oct 2024, 00:29

ER

If m and n are non-negative integers, what is the value of mn ?

605-655 (Medium) | Exponents, Number Properties

605-655 (Medium) | Exponents, Number Properties hide tags

Bunuel

24 Apr 2023, 06:15

6

3

2,596

by: bumpbot

03 Oct 2024, 19:31

ER

If n is a positive integer, what is the tens' digit of 7^n?

655-705 (Hard) | Exponents, Number Properties

655-705 (Hard) | Exponents, Number Properties hide tags

akshayuberoi

02 Mar 2021, 20:53

9

3

2,394

by: BrushMyQuant

03 Oct 2024, 07:51

ER

p and q are positive integers. Is p^2 - q^2 divisible by 24?

705-805 (Hard) | Multiples and Factors

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

sherxon

09 Jun 2021, 01:02

5

3

2,835

by: Bunuel

02 Oct 2024, 06:14

ER

A group of more than 2 people share an amount of money equally

805+ (Hard) | Word Problems

805+ (Hard) | Word Problems hide tags

shridhar786

12 Jul 2019, 04:34

11

3

3,387

by: bumpbot

01 Oct 2024, 21:16

ER

In a poll, 400 users were asked why they revisited a certain website.

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

Bunuel

03 Jun 2018, 11:24

4

3

5,157

by: bumpbot

01 Oct 2024, 02:36

50 animals competed for prizes at a certain fair. How many of the anim

505-555 (Easy) | Overlapping Sets

505-555 (Easy) | Overlapping Sets hide tags

TheUltimateWinner

03 Jun 2020, 13:26

6

3

3,058

by: bumpbot

01 Oct 2024, 02:16

ER -1

If a grocery shopper received $0.25 off the original price of

505-555 (Easy) | Percent and Interest Problems, Word Problems

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

Bunuel

11 Dec 2014, 07:25

3

7,742

by: devarpanc

30 Sep 2024, 12:33

ER

If a + b is even, is b an integer? (1) a - b = integer

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Bunuel

03 Oct 2023, 05:15

5

3

1,956

by: tusharsajeev08

27 Sep 2024, 03:55

ER -1

Is 25/(a + 1) an integer? (1) a is a multiple of 25 (2) 0 <= a <= 25

655-705 (Hard) | Multiples and Factors

655-705 (Hard) | Multiples and Factors hide tags

Bunuel

10 May 2020, 12:13

9

3

2,062

by: Ayeka

27 Sep 2024, 00:18

ER

Each week Pat deposits $100 into a savings account, plus 10 percent of

605-655 (Medium) | Percent and Interest Problems

605-655 (Medium) | Percent and Interest Problems hide tags

Bunuel

25 Sep 2024, 01:30

6

3

1,341

by: prantorboni

26 Sep 2024, 00:31

ER

The integer x is how much greater than 4?

Sub 505 (Easy) | Exponents

Sub 505 (Easy) | Exponents hide tags

Bunuel

29 Aug 2016, 03:57

1

3

2,742

by: bumpbot

25 Sep 2024, 10:30

Truck A gives an average of X miles per gallon of petrol while truck B

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

amanvermagmat

13 Jul 2018, 10:59

2

3

2,221

by: bumpbot

24 Sep 2024, 19:14

If John is exactly 4 years older than Bill, how old is John?

Sub 505 (Easy) | Word Problems

Sub 505 (Easy) | Word Problems hide tags

adkikani

22 Nov 2018, 09:06

5

3

8,412

by: bumpbot

24 Sep 2024, 11:24

ER

In a survey of a certain locality it was found that 80% of

Sub 505 (Easy) | Overlapping Sets

Sub 505 (Easy) | Overlapping Sets hide tags

benjamin09

19 Aug 2014, 07:29

13

3

11,500

by: bumpbot

24 Sep 2024, 05:04

ER

P, Q, R, S, and T represent five distinct points on the circumference

655-705 (Hard) | Geometry

655-705 (Hard) | Geometry hide tags

Bunuel

10 Apr 2020, 03:58

18

3

8,241

by: bumpbot

22 Sep 2024, 21:36

ER

What is the value of xy ? (1) x^2 + y^2 = 169 (2) x + y = 17

555-605 (Medium) | Algebra

555-605 (Medium) | Algebra hide tags

Bunuel

15 Feb 2023, 08:59

11

3

4,141

by: unraveled

21 Sep 2024, 09:18

ER

What is the value of x^2 + 2xy + y^2 ? (1) x + y = 7 (2) x = 2

Sub 505 (Easy) | Algebra

Sub 505 (Easy) | Algebra hide tags

Bunuel

19 Sep 2022, 06:45

2

3

2,680

by: Bunuel

21 Sep 2024, 07:11

ER

If x and y are positive integers and x*y = prime number greater than 2

805+ (Hard) | Number Properties

805+ (Hard) | Number Properties hide tags

GMATinsight

23 Jun 2019, 07:03

7

3

1,443

by: bumpbot

17 Sep 2024, 23:05

ER

Of the first three dozen cookies baked at a bake shop on a certain day

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

Bunuel

17 Sep 2024, 01:30

3

1,564

by: rish_dutton

17 Sep 2024, 19:59

ER

Is the positive square root of x an integer?

Sub 505 (Easy) | Number Properties

Sub 505 (Easy) | Number Properties hide tags

blackcrow

29 Dec 2013, 03:09

8

3

12,385

by: bumpbot

17 Sep 2024, 03:52

ER

Is the standard deviation of set X greater than the standard deviation

655-705 (Hard) | Statistics and Sets Problems

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

BrentGMATPrepNow

26 Sep 2021, 07:07

24

3

5,128

by: Bunuel

15 Sep 2024, 13:14

The table above shows the numbers of pets owned by the respondents to

555-605 (Medium) | Statistics and Sets Problems

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

kanishaksharma

01 Nov 2021, 04:11

2

3

2,869

by: glagad

14 Sep 2024, 23:16

ER

If x is a perfect square, such that 9x^5 has 5 distinct prime factors

705-805 (Hard) | Number Properties

705-805 (Hard) | Number Properties hide tags

Syumbel1

28 Nov 2023, 07:14

5

3

2,450

by: MartyMurray

14 Sep 2024, 16:19

ER

How much precipitation does Springfield need this month to attain its

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

Bunuel

12 Sep 2024, 01:30

2

3

895

by: Rod728

13 Sep 2024, 15:39

ER

If x and y are positive integers, what is the mean of x and y?

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

GMATBusters

05 Sep 2024, 03:53

4

3

1,030

by: Bunuel

11 Sep 2024, 07:06

ER

A group of 20 friends went out for lunch. Five of them spent $21 each

605-655 (Medium) | Word Problems

605-655 (Medium) | Word Problems hide tags

Bunuel

19 Jun 2022, 23:30

3

2,299

by: bumpbot

09 Sep 2024, 23:40

ER

Daniel invested a total of $10,000 for a period of one year. Part of

555-605 (Medium) | Percent and Interest Problems

555-605 (Medium) | Percent and Interest Problems hide tags

Bunuel

02 Mar 2022, 07:00

2

3

2,874

by: bumpbot

08 Sep 2024, 23:30

A certain company's profit is comprised of the profits of the 3 divisi

705-805 (Hard) | Statistics and Sets Problems

705-805 (Hard) | Statistics and Sets Problems hide tags

BillyZ

21 Feb 2017, 17:49

9

3

2,675

by: Rachitpaliwal10

08 Sep 2024, 00:30

ER

Is q < 0?

655-705 (Hard) | Arithmetic

655-705 (Hard) | Arithmetic hide tags

Mo2men

28 Dec 2018, 21:46

5

3

3,029

by: bumpbot

07 Sep 2024, 08:58

ER

If t is a positive integer, can t2 + 1 be completely divided by 10? (

805+ (Hard) | Multiples and Factors, Remainders

805+ (Hard) | Multiples and Factors, Remainders hide tags

siddharthkapoor

13 Oct 2019, 22:22

10

3

3,229

by: bumpbot

06 Sep 2024, 22:14