Data Sufficiency (DS)

02 Oct 2025, 01:36

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100 Hardest and easiest questions for DS as of October 2025

1, 2

Bunuel

21 Aug 2015, 03:42

842

24

183,704

16 Sep 2025, 06:05

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DS Question Directory by Topic and Difficulty

bb

07 Mar 2012, 08:58

1,506

0

480,542

by: bb

07 Mar 2012, 08:58

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What is the value of x ? (1) x^3+2x^2=3x (2) x^2–2x–15=0

505-555 Level | Algebra

505-555 Level | Algebra hide tags

sm1510

19 May 2021, 06:46

3

2

3,199

by: CrackverbalGMAT

14 Jun 2021, 23:47

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What is the value of x ? (1) x^3 = 6x − x^2 (2) 14x = x^3 + 5x^2

605-655 Level | Algebra

605-655 Level | Algebra hide tags

Bunuel

26 Nov 2017, 23:39

4

5

3,015

11 Apr 2025, 06:00

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What is the value of x ? (1) x^2 − 9 = 16 (2) 3x( x − 5) = 0

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

30 Oct 2019, 01:34

2

2,717

by: GMATinsight

21 Jan 2020, 05:07

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What is the value of x ? (1) x^2 - y^2 = 27 (2) x = 2y

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

01 Jan 2021, 08:15

3

1

961

by: chetan2u

01 Jan 2021, 21:05

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What is the value of x ? (1) x ≤ 8 (2) 8 ≤ x

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

GMATBusters

01 Nov 2018, 09:38

1

4

3,655

02 Feb 2023, 03:31

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What is the value of x ? (1) x = 5 (2) x = 5 or x = 6

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

10 Sep 2019, 00:31

1

2

990

by: Archit3110

10 Sep 2019, 02:23

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What is the value of x ? (1) 4^(x + 1) + 4^x = 320 (2) x^2 = 9

Sub 505 Level | Algebra, Exponents

Sub 505 Level | Algebra, Exponents hide tags

gmatt1476

21 Sep 2019, 16:49

32

4

11,544

25 Sep 2025, 20:32

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What is the value of x ? (1) 2x^2 + 18 = −12x (2) x < 0

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

19 Feb 2021, 10:04

1

2

1,836

05 Mar 2021, 06:15

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What is the value of x ? (1) √(x^2) = 19 (2) √(19^2) = x

555-605 Level | Algebra, Roots

555-605 Level | Algebra, Roots hide tags

Bunuel

08 Apr 2021, 10:00

7

2

2,342

15 Apr 2021, 21:00

7!! ER

What is the value of x ? (1) √(x^2) = 19 (2) √(19^2) = x

555-605 Level | Algebra, Roots

555-605 Level | Algebra, Roots hide tags

Bunuel

12 Feb 2021, 01:15

4

2,150

15 Feb 2021, 01:30

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What is the value of x ? (1) |x| = 7 (2) When x is divided by a negat

Sub 505 Level | Absolute Values, Number Properties

Sub 505 Level | Absolute Values, Number Properties hide tags

Bunuel

30 Oct 2019, 22:12

2

2,105

by: Archit3110

31 Oct 2019, 01:36

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What is the value of x ? (1) (|x| - 1)(x - 2) = 0 (2) -1 ≤ x ≤ 1

505-555 Level | Absolute Values, Algebra

505-555 Level | Absolute Values, Algebra hide tags

Bunuel

07 Nov 2017, 23:50

5

6

4,881

20 Apr 2022, 10:19

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What is the value of x ? (1) -(x + y)= x- y (2) x + y = 2

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

07 Jan 2014, 05:19

16

4

12,666

18 Oct 2023, 10:49

7!! ER

505-555 Level | Algebra

505-555 Level | Algebra hide tags

wizard

01 Mar 2012, 00:31

26

10

11,168

08 Jan 2024, 16:51

7!! ER

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

30 Dec 2020, 10:11

3

2

1,741

08 Jul 2023, 13:27

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605-655 Level | Exponents

605-655 Level | Exponents hide tags

fskilnik

06 Feb 2019, 08:17

3

4

1,539

07 Jun 2023, 09:35

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Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

carcass

29 Sep 2022, 02:26

3

1,379

by: Singhalatul87

09 Oct 2022, 10:57

7!! ER

505-555 Level | Algebra

505-555 Level | Algebra hide tags

hb

15 Jul 2013, 09:21

2

4

4,768

20 Jan 2021, 10:44

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What is the value of X ?

Poor Quality

Poor Quality hide tags

nkme2007

26 Jul 2020, 10:39

2

778

by: IanStewart

27 Jul 2020, 08:07

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Sub 505 Level | Number Properties

Sub 505 Level | Number Properties hide tags

vikasp99

02 Mar 2017, 23:04

4

1,830

by: KrishnakumarKA1

04 Mar 2017, 05:38

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Poor Quality

Poor Quality hide tags

cssk

05 Jan 2014, 10:35

3

2,713

by: cssk

05 Jan 2014, 10:55

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What is the value of x – y? (1) x + 2y = 6 (2) x = y

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

05 Nov 2017, 01:53

2

2,406

by: Adityagmatclub

06 Nov 2017, 09:53

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What is the value of x – y? (1) x + y = 3y – x (2) x + y = x^3 + y^3

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

11 Jul 2019, 00:32

3

1,507

by: Palladin

11 Jul 2019, 05:11

7!! ER

What is the value of x – y?

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

28 May 2017, 02:44

2

5

2,495

by: utkarshthapak

29 May 2017, 03:54

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What is the value of x – y ? (1) x = y + 3 (2) x^2 − 2xy + y^2 = 9

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

19 Nov 2018, 00:20

1

5

1,475

by: KSBGC

19 Nov 2018, 04:35

7!! ER

What is the value of x – y ?

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

macjas

27 May 2012, 09:11

2

5,793

29 Mar 2017, 05:52

7!! ER

What is the value of x - z? (1) The arithmetic average of x and y is

505-555 Level | Algebra, Statistics and Sets Problems

505-555 Level | Algebra, Statistics and Sets Problems hide tags

Bunuel

13 Apr 2018, 01:15

2

2,340

by: BrentGMATPrepNow

25 Mar 2020, 06:31

7!!

What is the value of x - z ? (1) 3 - z = -5 - x (2) x + z = 18

505-555 Level | Algebra

505-555 Level | Algebra hide tags

TheUltimateWinner

11 Feb 2021, 09:16

2

3

1,038

by: rahulgoel007

12 Feb 2021, 07:48

7!! ER

What is the value of x - y? (1) x3 - y3 = 0 (2) x4 - y4 = 0

605-655 Level | Arithmetic

605-655 Level | Arithmetic hide tags

GMATUser1928843

21 Jul 2022, 14:17

18

3

3,628

29 Jun 2025, 03:43

7!! ER

What is the value of x - y? (1) x - y = y - x (2) x - y =

555-605 Level | Algebra

555-605 Level | Algebra hide tags

GMATBusters

09 Nov 2018, 09:43

32

4

11,273

17 Oct 2024, 13:10

7!! ER

What is the value of x - y? (1) x + y = 12 (2) x^2 + x = 12

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

03 Mar 2021, 15:03

5

4

4,699

by: chetan2u

23 Jul 2021, 09:10

7!! ER

What is the value of x - y?

555-605 Level | Algebra

555-605 Level | Algebra hide tags

registerincog

18 Nov 2013, 07:25

28

5

9,474

12 Aug 2025, 05:37

7!! ER

What is the value of x - y?

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

08 Jun 2015, 08:54

24

14

7,851

29 Jul 2025, 23:32

7!! ER

What is the value of x - y ? (1) 3x - z = 42 and y - z = 5 (2) x^2

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

10 Feb 2020, 05:09

2

3,456

by: Archit3110

10 Feb 2020, 10:55

7!! ER

What is the value of x - y ? (1) (x - y)^5=32 (2) |x - y| = 2

505-555 Level | Absolute Values, Algebra

505-555 Level | Absolute Values, Algebra hide tags

Bunuel

27 Mar 2023, 09:30

5

2

1,822

26 Aug 2024, 02:29

7!! ER

What is the value of x - y ?

605-655 Level | Algebra

605-655 Level | Algebra hide tags

Turkish

04 May 2015, 12:02

10

6

3,110

26 Jul 2022, 19:04

7!!

What is the value of X

Poor Quality

Poor Quality hide tags

jayoptimist

04 Jul 2012, 09:23

3

2,501

by: cyberjadugar

04 Jul 2012, 10:42

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What is the value of w?

555-605 Level | Algebra, Number Properties

555-605 Level | Algebra, Number Properties hide tags

Bunuel

03 Mar 2020, 04:04

4

5,427

21 Aug 2023, 08:15

7!! ER

What is the value of w?

655-705 Level | Algebra

655-705 Level | Algebra hide tags

BrentGMATPrepNow

11 Nov 2022, 08:58

2

1

1,765

by: gmatophobia

11 Nov 2022, 09:15

7!! ER

What is the value of w^(2)? (1) w^(1) = 1/2 (2) w^3 = 8

Sub 505 Level | Exponents

Sub 505 Level | Exponents hide tags

Bunuel

21 Oct 2015, 21:35

39

13

32,927

05 Feb 2025, 21:59

7!! ER

What is the value of w + q ? (1) 3w=3-3q (2) 5w +5q = 5

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

02 Jul 2012, 02:33

19

7

38,029

13 Nov 2022, 20:29

7!! ER

What is the value of v/w? (1) w/v = 1.5 (2) v > 0

505-555 Level | Fractions and Ratios

505-555 Level | Fractions and Ratios hide tags

Bunuel

13 Sep 2022, 01:30

1

1,385

by: sanjitscorps18

13 Sep 2022, 09:06

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What is the value of v^3 - k^3 ? (1) vk > 0 (2) v - k = 6

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

22 Jul 2020, 04:38

11

6

10,679

22 Dec 2023, 21:49

7!! ER

What is the value of u? (1) |u| + |v| = 0 (2) u^2 + v^2 = 0

555-605 Level | Absolute Values +2 tags

555-605 Level | Absolute Values, Algebra, Number Properties hide tags

Bunuel

30 Jan 2023, 04:45

6

2

2,137

15 Oct 2024, 09:57

7!! ER

What is the value of u? (1) 7/u - 4 = 10 (2) 32/16 = 1/u

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

05 Oct 2020, 04:15

2

1

1,010

by: Akp880

05 Oct 2020, 04:19

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What is the value of two-digit integer x?

505-555 Level | Number Properties

505-555 Level | Number Properties hide tags

Bunuel

02 Oct 2015, 01:45

4

6

8,438

18 Nov 2016, 10:55

7!! ER

What is the value of the vertex angle of the isosceles triangle?

705-805 Level | Geometry

705-805 Level | Geometry hide tags

houston1980

04 Jul 2022, 12:07

2

1

1,037

by: av1901

13 Jul 2022, 12:05

7!! ER

What is the value of the two-digit positive integer XY, where X repres

555-605 Level | Arithmetic

555-605 Level | Arithmetic hide tags

Bunuel

01 Jul 2018, 20:41

5

4

3,151

26 Oct 2019, 11:55

7!! ER

What is the value of the two-digit positive integer n?

655-705 Level | Remainders

655-705 Level | Remainders hide tags

alex1233

16 Mar 2013, 14:04

117

14

16,205

01 Mar 2025, 11:07

7!! ER

What is the value of the two-digit positive integer n?

555-605 Level | Number Properties

555-605 Level | Number Properties hide tags

russ9

01 Dec 2014, 19:04

120

10

28,872