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# Problem Solving (PS)

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1
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 Introducing a Chat in PS Forum
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738

05 Jun 2019, 07:31

Forum Experts

 EMPOWERgmat PS Forum Expert - Ask Me Anything about PS and Math   Tags: Source: EMPOWERgmat
EMPOWERgmatRichC

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3101

11 Jul 2019, 11:33

 Veritas Prep PS Forum Expert - Karishma - Ask Me Anything about Math   Go to page: 1 ... 6, 7, 8 Tags: Source: Veritas Prep

152

6153

16 Jun 2019, 23:00

Announcements

474
ER
 100 Hardest and easiest questions for PS as of June 2019
Bunuel

11

95092

11 Jul 2019, 10:17

1815
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 GMAT PS Question Directory by Topic & Difficulty
bb

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708718

22 Feb 2012, 11:27

Topics

1197
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 NEW!!! Tough and tricky exponents and roots questions   Go to page: 1, 2, 3, 4, 5 Tags: Difficulty: 700-Level,  Algebra,  Exponents/Powers,  Roots,  Source: GMAT Club Tests
Bunuel

92

303629

07 Jan 2019, 21:14

1150
ER
 Last Sunday a certain store sold copies of Newspaper A for
udaymathapati

45

74795

09 Jun 2019, 05:25

1084
ER
 0.99999999/1.0001 - 0.99999991/1.0003 =

21

55040

18 Apr 2019, 13:04

686
ER
 New Algebra Set!!!   Go to page: 1 ... 6, 7, 8 Tags: Difficulty: 700-Level,  Algebra,  Sequences,  Source: GMAT Club Tests
Bunuel

144

192052

08 Jun 2019, 10:04

459
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 If 10! - 2*(5!)^2 is divisible by 10^n, what is the greatest   Go to page: 1, 2, 3 Tags: Difficulty: 700-Level,  Algebra,  Divisibility/Multiples/Factors,  Number Properties
aalriy

48

43358

24 Jan 2019, 16:41

423
ER
 The function f is defined for each positive three-digit
Orange08

24

29502

16 May 2019, 15:38

394
ER
 Which of the following fractions is closest to 1/2?
AbdurRakib

25

33768

09 May 2019, 02:49

336
ER
 Each year for 4 years, a farmer increased the number of trees in a
imhimanshu

45

40814

02 Jul 2019, 04:24

332
ER
 For any positive integer n, the sum of the first n positive integers
CharmWithSubstance

27

113217

02 Jul 2019, 07:44

317
ER
 If x and y are positive numbers such that x + y = 1, which of the
BrainLab

29

24244

02 Jun 2019, 03:04

310
ER
 If x, y, and k are positive numbers such that x/(x + y)*10 + y/(x + y)   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Must or Could be True Questions,  Source: OG 12
BANON

28

30055

27 May 2019, 21:29

276
ER
 Let a,b,c, and d be nonzero real numbers. If the quadratic equation
amitpaul527

16

31564

28 Jan 2019, 07:36

262
ER
 The number of stamps that Kaye and Alberto had were in the
kilukilam

30

45013

15 Sep 2018, 14:44

258
ER
 From the consecutive integers -10 to 10 inclusive, 20
catty2004

46

30486

01 Jul 2019, 06:00

253
ER
 The product of all the prime numbers less than 20 is closest to which
Bunuel

14

57846

09 May 2019, 23:54

247
ER
 A certain clock marks every hour by striking a number of times equal
Bunuel

20

11134

15 Jul 2019, 08:08

245
ER
 If 2^x + 2^y = x^2 + y^2, where x and y are nonnegative inte
axl_oz

20

25300

20 Mar 2019, 11:02

235
ER
 If each expression under the square root is greater than or
study

23

11978

27 May 2019, 08:53

200
ER
 For every positive integer n, the nth term of sequence is given by an=
inakihernandez

16

26737

10 Jul 2019, 22:41

189
ER
 During the month of April, the average temperatures on day n
TeamGMATIFY

13

15811

04 Jun 2019, 22:37

188
ER
 A set of 15 different integers has median of 25 and a range   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Statistics and Sets Problems,  Source: GMAT Prep
bhushangiri

26

43551

13 Jan 2019, 06:06

184
ER
 N and M are each 3-digit integers. Each of the numbers 1, 2,
nobelgirl777

23

18387

26 Jun 2019, 15:55

182
ER
 If 10^50 – 74 is written as an integer in base 10 notation what is the
minnu

13

11492

21 May 2019, 12:29

171
ER
 In the infinite sequence A, An = X^(n-1) + X^n + X^(n+1) + X^(n+2) + X   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Sequences,  Source: Manhattan GMAT
ksharma12

28

32487

20 Aug 2018, 08:11

171
ER
 If root{3-2x} = root(2x) +1, then 4x^2 =
Bunuel

35

28264

18 Mar 2019, 10:07

170
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 The sum of all the digits of the positive integer q is equal   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Arithmetic,  Exponents/Powers,  Source: Manhattan GMAT
enigma123

22

22110

26 Jun 2019, 10:52

168
 The function g(x) is defined for integers x such that if x
bhandariavi

14

13609

19 Jan 2019, 03:10

151
ER
 If x and y are positive, which of the following must be   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Must or Could be True Questions,  Roots,  Source: GMAT Prep
study

37

16043

27 Oct 2018, 01:34

148
ER
 An investor purchased 100 shares of stock X at 6 1/8 dollars   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Arithmetic,  Word Problems,  Source: GMAT Prep EP2
surupab

20

25866

27 Oct 2018, 06:15

143
ER
 If x represents the sum of all the positive three-digit
rvthryet

17

20915

22 Aug 2018, 06:30

143
ER
 For integers x and y, 2^x + 2^y =2^30. What is the value of x + y?   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Exponents/Powers,  Source: Veritas Prep
Bunuel

21

11972

06 Feb 2019, 23:06

142
ER
 What is the product of all the solutions of x^2 - 4x + 6=3   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Absolute Values/Modulus,  Algebra
carcass

31

15363

28 Jan 2019, 06:50

141
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 If the sum of the square roots of two integers is   Go to page: 1, 2 Tags: Difficulty: 700-Level,  Algebra,  Roots,  Source: GMAT Prep
Bunuel

21

6151

25 Oct 2018, 01:08

135
ER
 For how many ordered pairs (x , y) that are solutions of the
Bunuel

10

10801

25 Jun 2019, 02:50

128
ER
 In a numerical table with 10 rows and 10 columns, each entry is either
carcass

11

9824

19 Nov 2018, 00:01

123
ER
 Each digit in the two-digit number G is halved to form a new   Go to page: 1, 2, 3 Tags: Difficulty: 700-Level,  Arithmetic,  Word Problems
u2lover

51

17679

13 Apr 2019, 03:15

121
ER
 A dealer offers a cash discount of 20% and still makes a pro
feruz77

18

43554

31 May 2018, 00:52

118
ER
 A certain quantity is measured on two different scales, the
appy001

17

8390

16 Jun 2019, 10:03

118
ER
 If m^2 < 225 and n - m = -10, what is the sum f the smallest
Bunuel

12

9152

27 Jan 2019, 02:58

114
ER
 If x^2 + y^2 = 100, and x≥0, and y≥0, the maximum value of x
emmak

12

12791

22 Feb 2019, 10:02

114
ER
 How many different pairs of integers (a, b) exist such that 2 <= a <=
Bunuel

8

5860

22 Sep 2018, 09:23

113
ER
 A convenience store currently stocks 48 bottles of mineral water. The
dred

23

15326

19 May 2019, 04:34

113
ER
 The mean of (54,820)^2 and (54,822)^2 =
enigma123

13

8360

08 Nov 2018, 06:07

112
ER
 The last digit of 12^12 + 13^13 – 14^14×15^15 =
Bunuel

13

7653

26 Jun 2018, 09:51

110
ER
 An escalator moves downward from street level to a subway platform at

10

3256

06 Jun 2018, 06:33

108
ER
 Which of the following function follows the rule: f(a + b) = f(a)*f(b)   Go to page: 1, 2, 3, 4, 5 Tags: Difficulty: 700-Level,  Algebra,  Functions and Custom Characters,  Source: e-GMAT
Bunuel

85

1948

10 Jul 2019, 21:36

107
ER
 If s and t are integers greater than 1 and each is a factor of the int
aniketm.87@gmail.com

15

15735

21 Jan 2019, 06:06

106
ER
 The product of two negative numbers is 160. If the lesser of the two
Bunuel

25

15033

19 Jun 2019, 10:18

104
ER
 What is the tens digit of 6^17?
Raths

24

28078

26 Jan 2019, 21:05

102
ER
 If y=root(3y+4), then the product of all possible solution
Prax

14

8304

17 Sep 2018, 14:23

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