Problem Solving (PS)

29 Apr 2026, 10:59

ER

A list of n integers is arranged in two columns of equal len

805+ (Hard) | Must or Could be True +2 tags

805+ (Hard) | Must or Could be True, Number Properties, Probability hide tags

kevincan

29 Apr 2026, 05:11

1

209

29 Apr 2026, 06:07

ER

At a fair, three families purchase drinks: the Peterson fami

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

kevincan

27 Mar 2026, 23:49

2

1

265

by: shivani1351

29 Apr 2026, 00:31

ER

How many positive integers less than or equal to 300 are div

705-805 (Hard) | Multiples and Factors

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

kevincan

28 Mar 2026, 00:18

4

1

294

by: shivani1351

29 Apr 2026, 00:06

ER

Mirella travels one part of a journey by bike at 18 km/h and

555-605 (Medium) | Distance and Speed Problems

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

kevincan

04 Apr 2026, 02:43

3

1

344

by: shivani1351

28 Apr 2026, 23:36

ER

How many three-digit integers are there such that the hundre

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

kevincan

28 Apr 2026, 02:34

1

202

28 Apr 2026, 03:27

ER

The in-store price for an outdoor pool is $985.00.

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

kevincan

28 Apr 2026, 08:18

1

172

28 Apr 2026, 03:24

ER

Two-fifths of the residents of Plainfield live downtown and

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

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

kevincan

27 Apr 2026, 16:02

4

1

326

27 Apr 2026, 20:43

ER

At a gala dinner, each attendee was accompanied by his or he

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

kevincan

27 Apr 2026, 02:28

1

213

27 Apr 2026, 08:58

ER

There are 3 different cars available to transport 3 girls and 5 boys

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

Bunuel

19 Feb 2021, 08:15

12

1

2,653

27 Apr 2026, 08:18

ER

Mia and Maude each receive money for a 30-day trip. Mia rece

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

kevincan

25 Apr 2026, 12:13

1

200

by: ankushsambare

26 Apr 2026, 20:46

A hotel assigns 5 keys to 5 guests at random

705-805 (Hard) | Probability

705-805 (Hard) | Probability hide tags

Lorenzini

25 Apr 2026, 15:51

4

1

218

by: ankushsambare

26 Apr 2026, 20:32

ER

What is the product of all positive odd integers less than 2

655-705 (Hard) | Algebra, Number Properties

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

kevincan

26 Apr 2026, 04:33

7

1

281

26 Apr 2026, 05:23

ER

Esther and Florian have a son named Diego. The average of th

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

kevincan

26 Apr 2026, 04:17

1

172

26 Apr 2026, 05:20

ER

The provincial income tax that Leonor pays is [m]p\%[/m] of

655-705 (Hard) | Percent and Interest Problems

655-705 (Hard) | Percent and Interest Problems hide tags

kevincan

26 Apr 2026, 04:04

1

218

26 Apr 2026, 01:17

ER

The table below shows the distribution of heights, in centim

655-705 (Hard) | Statistics and Sets Problems

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

kevincan

24 Apr 2026, 09:59

7

1

271

24 Apr 2026, 23:23

ER

A set of n numbers has the following properties: three of th

655-705 (Hard) | Statistics and Sets Problems

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

kevincan

22 Apr 2026, 15:15

2

1

168

by: stne

23 Apr 2026, 14:24

ER

Camille and Gabrielle are rowing down a river, the current o

655-705 (Hard) | Distance and Speed Problems

655-705 (Hard) | Distance and Speed Problems hide tags

kevincan

17 Apr 2026, 10:51

3

1

263

22 Apr 2026, 15:28

-1

Machine A and Machine B working together can complete a job in 20 days

705-805 (Hard) | Word Problems, Work and Rate Problems

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

vartikg

18 Apr 2026, 12:59

5

1

351

by: Adit_

22 Apr 2026, 02:46

ER

Edu and Fran are bricklayers. Working alone, Edu could build

705-805 (Hard) | Work and Rate Problems

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

kevincan

21 Apr 2026, 12:29

9

1

311

by: HarshavardhanR

21 Apr 2026, 21:28

ER

Diego earns $2400 per month plus $64 per sofa sold, and an a

705-805 (Hard) | Statistics and Sets Problems

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

kevincan

20 Apr 2026, 18:31

2

1

232

by: EvenPort

21 Apr 2026, 10:18

ER

In a sequence of integers, [m]a_1 = 40[/m] and [m]a_n < a_{n

805+ (Hard) | Inequalities +3 tags

805+ (Hard) | Inequalities, Min-Max Problems, Must or Could be True, Sequences hide tags

kevincan

17 Apr 2026, 23:53

3

1

357

by: Marcelo7

21 Apr 2026, 07:55

ER

Juan, Nicole, and Jacobo are saving money at constant rates

705-805 (Hard) | Work and Rate Problems

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

kevincan

26 Mar 2026, 14:13

1

372

by: tejas6

20 Apr 2026, 15:21

ER

Anabel and Blas won the lottery and split the winnings

805+ (Hard) | Word Problems, Work and Rate Problems

805+ (Hard) | Word Problems, Work and Rate Problems hide tags

kevincan

19 Apr 2026, 13:40

6

1

312

by: SaveSilk

20 Apr 2026, 11:22

ER

Each of the technicians employed by Vattel earns $56,000 a y

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

kevincan

20 Apr 2026, 14:47

1

213

by: SaveSilk

20 Apr 2026, 11:06

ER

Carlsons sells both conventional and electric bikes. Last m

705-805 (Hard) | Word Problems

705-805 (Hard) | Word Problems hide tags

kevincan

20 Apr 2026, 04:16

5

1

156

by: Adit_

20 Apr 2026, 04:44

ER

S is the set of the n smallest positive intege

805+ (Hard) | Probability

805+ (Hard) | Probability hide tags

kevincan

18 Apr 2026, 00:41

5

1

218

18 Apr 2026, 12:50

ER

Harrys Hardware Store sells a set of tools at a price that

555-605 (Medium) | Percent and Interest Problems, Word Problems

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

kevincan

14 Apr 2026, 04:03

1

307

by: pappal

17 Apr 2026, 14:41

ER

A beach shop owner purchases beach umbrellas at a discount o

705-805 (Hard) | Percent and Interest Problems

705-805 (Hard) | Percent and Interest Problems hide tags

kevincan

13 Apr 2026, 07:58

5

1

295

by: stne

17 Apr 2026, 13:45

ER

Let W = {-x, -x, -x, x, x, x}[/m] and [m]T = {-y, 0, 0, 0

655-705 (Hard) | Statistics and Sets Problems

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

kevincan

12 Apr 2026, 11:32

4

1

269

by: stne

17 Apr 2026, 12:48

ER

If 1 - p/100 is used as an approximation to [

705-805 (Hard) | Algebra

705-805 (Hard) | Algebra hide tags

kevincan

17 Apr 2026, 10:52

2

1

202

by: dhruv23320

17 Apr 2026, 06:40

ER

At a vehicle dealership last year, 1/5 of customers

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

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

kevincan

17 Apr 2026, 01:00

1

253

by: Adit_

17 Apr 2026, 01:46

ER

Thiago was given a new 6-digit code for the door to the buil

705-805 (Hard) | Combinations

705-805 (Hard) | Combinations hide tags

kevincan

16 Apr 2026, 12:46

6

1

229

16 Apr 2026, 18:54

ER

How many 4-letter strings, using the 26 letters of the Engli

655-705 (Hard) | Combinations

655-705 (Hard) | Combinations hide tags

kevincan

15 Apr 2026, 22:22

4

1

239

16 Apr 2026, 05:20

ER

In a dental clinic with 12 employees, the 6 assistants each

555-605 (Medium) | Word Problems

555-605 (Medium) | Word Problems hide tags

kevincan

15 Apr 2026, 23:38

1

164

16 Apr 2026, 01:03

ER

Torentia exported 2/3 of the fertilizer it produced

655-705 (Hard) | Word Problems

655-705 (Hard) | Word Problems hide tags

kevincan

12 Apr 2026, 14:53

3

1

221

15 Apr 2026, 15:37

ER

If x is 32 times an odd number, which of the following could

605-655 (Medium) | Multiples and Factors +2 tags

605-655 (Medium) | Multiples and Factors, Must or Could be True, Number Properties hide tags

kevincan

14 Apr 2026, 12:09

7

1

395

15 Apr 2026, 15:06

ER

For all positive integers x, f(x) is the number of positive

805+ (Hard) | Multiples and Factors

805+ (Hard) | Multiples and Factors hide tags

kevincan

15 Apr 2026, 05:02

1

226

15 Apr 2026, 14:28

ER

Belinda, Carlota, and Darcy each shelled the same number of

705-805 (Hard) | Work and Rate Problems

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

kevincan

15 Apr 2026, 11:23

5

1

226

15 Apr 2026, 14:23

ER

Three identical glasses contain water. One glass is

655-705 (Hard) | Fractions and Ratios

655-705 (Hard) | Fractions and Ratios hide tags

kevincan

15 Apr 2026, 06:26

2

1

222

by: khanhtam28

15 Apr 2026, 09:42

ER

If 3 of the 10 smallest positive integers are chosen at rand

655-705 (Hard) | Probability

655-705 (Hard) | Probability hide tags

kevincan

14 Apr 2026, 17:50

5

1

247

15 Apr 2026, 04:49

ER

The price of a Carson V vacuum cleaner is $10 higher in Brig

805+ (Hard) | Percent and Interest Problems

805+ (Hard) | Percent and Interest Problems hide tags

kevincan

08 Apr 2026, 14:35

3

1

274

by: luisdicampo

15 Apr 2026, 02:08

ER

Walking on a moving walkway, Candela takes y seconds to trav

705-805 (Hard) | Distance and Speed Problems

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

kevincan

11 Apr 2026, 22:44

6

1

268

by: pappal

14 Apr 2026, 12:12

ER

Ten years ago, Urlanda allocated 5% of its budget to defense

705-805 (Hard) | Fractions and Ratios +2 tags

705-805 (Hard) | Fractions and Ratios, Percent and Interest Problems, Word Problems hide tags

kevincan

15 Apr 2026, 22:51

4

1

309

14 Apr 2026, 11:28

ER

When Tatiana had driven 35% of the distance from her office

505-555 (Easy) | Percent and Interest Problems

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

kevincan

14 Apr 2026, 07:45

2

1

209