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

183,713

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

480,546

by: bb

07 Mar 2012, 08:58

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What is the value of x? (1) x/y = 3 (2) x – y = 9

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

24 Oct 2017, 23:53

3

1,695

by: MathRevolution

28 Oct 2017, 13:21

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What is the value of x? (1) x(y - z) = 0 (2) yz < 0

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Russ19

03 Jul 2020, 10:15

12

7

2,896

by: ifteec464

21 Jul 2020, 11:59

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What is the value of x? (1) x^6 = 729 (2) x^5 < x^4

505-555 Level | Inequalities

505-555 Level | Inequalities hide tags

Bunuel

12 Oct 2017, 23:21

3

4

2,731

by: JeffTargetTestPrep

27 Nov 2017, 19:13

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What is the value of x? (1) x^4 = 2,401 (2) x^5 = 16,807

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

01 Aug 2018, 05:25

7

13

4,130

12 Aug 2018, 01:49

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What is the value of x? (1) x^3 = -27 (2) x^2 = 9

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

14 Jul 2021, 04:30

1

1,176

by: Showmeyaa

14 Jul 2021, 05:17

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What is the value of x? (1) x^2 = 6x - 9 (2) x^2 = x + 6

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

07 Dec 2020, 02:15

1

2,854

07 Dec 2020, 03:41

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What is the value of x? (1) x^2 + x - 12 = 0 (2) x^2 < 25

505-555 Level | Algebra, Inequalities

505-555 Level | Algebra, Inequalities hide tags

Bunuel

13 Apr 2018, 02:17

1

7

2,122

by: MathRevolution

30 Apr 2018, 12:46

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What is the value of x? (1) x^2 – 5 x + 6 = 0 (2) x > 0

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

ajgoupil

06 Feb 2020, 11:29

6

7,876

16 May 2024, 00:57

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What is the value of x? (1) x^(1/2) = x - 2 (2) x ≠ 1.

655-705 Level | Algebra

655-705 Level | Algebra hide tags

Bunuel

26 Dec 2019, 02:07

20

17

9,776

by: mysterymanrog

24 Sep 2023, 03:31

7!!

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

505-555 Level | Algebra

505-555 Level | Algebra hide tags

neadhs

09 Jun 2018, 04:08

1

3

1,481

by: push12345

19 Jul 2018, 04:27

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What is the value of x? (1) x + 1 = 2 - 3x (2) 1/(2x) = 2

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

31 Dec 2013, 07:23

3

5

12,846

11 Oct 2022, 20:26

7!! ER

What is the value of x? (1) x < 3 (2) x > 1

505-555 Level | Inequalities

505-555 Level | Inequalities hide tags

Bunuel

27 Oct 2021, 09:00

1

877

27 Oct 2021, 09:03

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What is the value of x? (1) w + y = 118 (2) 2y - w = 56

Sub 505 Level | Geometry

Sub 505 Level | Geometry hide tags

Bunuel

03 Mar 2021, 14:46

3

2,636

22 Mar 2023, 14:17

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What is the value of x? (1) The mean (arithmetic average) of 14, 6x,

605-655 Level | Statistics and Sets Problems

605-655 Level | Statistics and Sets Problems hide tags

Bunuel

10 Apr 2018, 04:42

2

1,525

by: amanvermagmat

10 Apr 2018, 07:54

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What is the value of x? (1) 8^(x + 2) = 16^(4 + y) (2) 3^(x − y) =27

Sub 505 Level | Exponents

Sub 505 Level | Exponents hide tags

Bunuel

04 Apr 2018, 23:43

2

2,214

by: GMATinsight

05 Apr 2018, 05:17

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What is the value of x? (1) 6x – 14y = 10 (2) 21y = 9x – 15

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

24 Jul 2018, 02:12

1

3,012

by: EgmatQuantExpert

24 Jul 2018, 02:24

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What is the value of x? (1) 5x + 3y = 15 (2) y = 5 – (5/3)x

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

26 Oct 2016, 22:45

1

2

2,834

by: EMPOWERgmatRichC

21 Nov 2017, 15:37

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What is the value of x? (1) 5x + 10y = 65 (2) x + y = 8

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

05 May 2019, 23:03

2

1,309

by: sumi747

05 May 2019, 23:20

7!! ER

What is the value of x? (1) 5x + 10y = 65 (2) 130 – 20y = 10x

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

02 May 2019, 06:29

4

3

3,414

07 Jul 2020, 10:13

7!! ER

What is the value of x? (1) 4x + 4 = 0 (2) (x + 2)^2 = x^2

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

07 Apr 2020, 07:10

2

4

2,186

by: RAJAT333

24 Nov 2023, 10:06

7!! ER

What is the value of x? (1) 4/x + 4 + x = 0 (2) 6/x + 1 = x

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

01 Feb 2021, 13:45

1

1,094

01 Feb 2021, 19:13

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What is the value of x? (1) 3x + 15y = 35 (2) 70 − 6x = 30y

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

09 Sep 2015, 00:48

5

7

3,536

14 Sep 2015, 06:55

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What is the value of x? (1) 310x + 562y = 909 (2) 951x – 626y = 323

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

23 Oct 2020, 00:15

6

2,316

by: Nipungupta9081

24 Oct 2020, 04:23

7!! ER

What is the value of x? (1) 3^x*4^x = 144 (2) (10^x)^x = 10,000

655-705 Level | Exponents

655-705 Level | Exponents hide tags

Bunuel

03 Apr 2018, 21:45

5

3

1,715

by: US09

05 Apr 2018, 09:14

7!! ER

What is the value of x? (1) 22 < 3x + 1 < 28 (2) x is an integer.

505-555 Level | Inequalities, Number Properties

505-555 Level | Inequalities, Number Properties hide tags

Bunuel

10 Oct 2019, 21:38

1

1,492

11 Oct 2019, 01:10

7!! ER

What is the value of x? (1) 2^x < 20

705-805 Level | Exponents, Inequalities

705-805 Level | Exponents, Inequalities hide tags

abrutlag

05 Jul 2020, 10:50

5

9

1,880

by: Kinshook

09 Jul 2020, 10:30

7!! ER

What is the value of x? (1) |x| = 4. (2) x^2 = 16.

Sub 505 Level | Absolute Values, Algebra

Sub 505 Level | Absolute Values, Algebra hide tags

ashikaverma13

11 May 2017, 11:56

20

10

13,214

17 Jan 2024, 07:21

7!! ER

What is the value of x? (1) |x| = −x (2) |x|^2 = −x^2

605-655 Level | Absolute Values

605-655 Level | Absolute Values hide tags

Bunuel

02 May 2021, 07:15

4

3

1,393

09 May 2021, 04:45

7!! ER

What is the value of x? (1) |x+2| ≤ 4 (2) x^2 = 36

505-555 Level | Absolute Values +2 tags

505-555 Level | Absolute Values, Algebra, Inequalities hide tags

Bunuel

07 Nov 2017, 23:28

10

3

3,088

21 Apr 2022, 02:21

7!! ER

What is the value of x? (1) |x + 9| = 2x (2) |2x − 9| = x

705-805 Level | Absolute Values

705-805 Level | Absolute Values hide tags

Bunuel

02 May 2021, 01:15

12

7

3,513

16 Mar 2025, 06:36

7!! ER

What is the value of x? (1) |x + 5| = |x + 3| (2) |x + 3| = 1

555-605 Level | Absolute Values

555-605 Level | Absolute Values hide tags

Bunuel

05 May 2021, 05:30

2

5

2,339

16 May 2021, 11:26

7!! ER

What is the value of x? (1) |x + 3| = 3|x - 3| (2) x > 3

555-605 Level | Inequalities

555-605 Level | Inequalities hide tags

divyajoshi12

13 Sep 2018, 09:53

9

7

8,011

11 Jun 2023, 20:55

7!! ER

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

555-605 Level | Absolute Values +2 tags

555-605 Level | Absolute Values, Algebra, Inequalities hide tags

Bunuel

25 Nov 2019, 23:12

21

12

7,877

by: CrackverbalGMAT

27 Nov 2019, 07:26

7!! ER

What is the value of x? (1) |x + 1| = 1 (2) |x − 1| = 1

505-555 Level | Absolute Values

505-555 Level | Absolute Values hide tags

Bunuel

16 May 2021, 23:00

3

4

1,649

22 May 2021, 06:15

7!! ER

What is the value of x? (1) |6 - 3x| = x - 2 (2) |5x + 3| = 2x + 9

555-605 Level | Absolute Values

555-605 Level | Absolute Values hide tags

Bunuel

25 Jul 2018, 03:41

5

4

5,367

25 Jul 2018, 05:44

7!! ER

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

705-805 Level | Absolute Values, Algebra

705-805 Level | Absolute Values, Algebra hide tags

Bunuel

24 Apr 2017, 04:21

39

8

8,180

20 Jul 2025, 17:49

7!! ER

What is the value of x? (1) (x – 5)^2 = 0 (2) (x – 3)^2 = 4

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

07 Oct 2021, 01:30

6

5

2,155

31 Oct 2023, 06:46

7!! ER

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

555-605 Level | Algebra

555-605 Level | Algebra hide tags

Bunuel

11 Oct 2019, 00:39

1

957

11 Oct 2019, 01:26

7!! ER

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

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

04 Apr 2017, 00:25

2

1,346

by: matthewsmith_89

04 Apr 2017, 13:47

7!! ER

What is the value of x? (1) 2x + 4y = 3 (2) 3(x + 2y) = 6y - x

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

11 Oct 2019, 00:47

1

1,454

11 Oct 2019, 01:22

7!! ER

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

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

23 Sep 2018, 21:12

14

6

11,060

19 Jun 2024, 00:15

7!! ER

What is the value of x? (1) |x - 1| = 2 (2) |x + 3| = 2x

655-705 Level | Absolute Values

655-705 Level | Absolute Values hide tags

Russ19

05 Oct 2021, 23:10

1

1,055

06 Oct 2021, 00:54

7!! ER

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

505-555 Level | Algebra

505-555 Level | Algebra hide tags

Bunuel

05 Sep 2017, 00:04

2

1,543

by: Kinshook

10 Jul 2019, 22:27

7!! ER

What is the value of x? (1) 1/x^2 = 1/16 (2) 1/2x = 1/8

Sub 505 Level | Algebra

Sub 505 Level | Algebra hide tags

Bunuel

25 Jun 2020, 10:43

4

1,202

by: vipulshahi

28 Jun 2020, 09:38

7!! ER

555-605 Level | Algebra

555-605 Level | Algebra hide tags

BrentGMATPrepNow

24 Feb 2020, 07:31

3

5

1,849

30 Oct 2025, 06:21

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605-655 Level | Arithmetic

605-655 Level | Arithmetic hide tags

interceptor77

30 Oct 2016, 04:07

75

5

7,943

03 Sep 2025, 04:08

7!! ER

805+ Level | Algebra, Number Properties

805+ Level | Algebra, Number Properties hide tags

shan123

01 Jan 2011, 01:32

143

18

21,792

29 Aug 2025, 08:13

7!! ER

655-705 Level | Algebra

655-705 Level | Algebra hide tags

Shalabh09

01 May 2015, 06:32

17

8

3,960

19 Jul 2025, 19:10

7!! ER

555-605 Level | Number Properties

555-605 Level | Number Properties hide tags

banksy

26 Feb 2011, 17:37

33

7

13,898

13 Jun 2025, 04:37

7!! ER

605-655 Level | Algebra, Number Properties

605-655 Level | Algebra, Number Properties hide tags

Bunuel

27 Jan 2015, 07:35

55

9

7,620