# Problems

1 – 42 of 42
 Problem Title Likes Solvers Difficulty

#### Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

12

774

#### Problem 44370. Octoberfest festival

Created by: Andriy Kavetsky

3

446

#### Problem 44314. A Simple Tide Gauge with MATLAB

Created by: AMITAVA BISWAS

4

365

#### Problem 44381. Cache me Outside

Created by: @bmtran (Bryant Tran)

Tags cody5, memoize

5

90

#### Problem 564. How to subtract?

Created by: AMITAVA BISWAS

7

1472

#### Problem 44363. Is this is a Tic Tac Toe X Win?

Created by: Doug Hull

2

484

#### Problem 44384. Find the nearest prime number

Created by: Matthew Eicholtz

6

595

Created by: goc3

5

383

Created by: goc3

0

298

#### Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

11

697

#### Problem 44334. Sums of Multiple Pairs of Triangular Numbers

Created by: James

1

219

#### Problem 44307. The glass half full

Created by: HH

Tags contest, cody5

7

243

#### Problem 44342. Spot the First Occurrence of 5

Created by: Peng Liu

Tags cody5

2

393

#### Problem 44321. Van Eck's Sequence's nth member

Created by: Mehmet OZC

12

305

Created by: goc3

7

424

#### Problem 44319. Write c^3 as sum of two squares a^2+b^2

Created by: Mehmet OZC

2

300

Created by: goc3

11

614

Created by: goc3

2

277

#### Problem 44349. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.

Created by: James

Tags time, cody5

12

893

#### Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

15

932

#### Problem 44338. Recaman Sequence - I

Created by: Mehmet OZC

3

285

#### Problem 44375. Missing five

Created by: Alfonso Nieto-Castanon

Tags cody5

8

318

#### Problem 44339. Recaman Sequence - II

Created by: Mehmet OZC

1

249

#### Problem 44364. Is this a valid Tic Tac Toe State?

Created by: Doug Hull

Tags cody5

4

108

#### Problem 44372. Polarisation

Created by: Jan Orwat

3

248

#### Problem 44352. The Top 5 Primes

Created by: Peng Liu

Tags cody5

5

291

#### Problem 281. Acid and water

Created by: AMITAVA BISWAS

1

241

Created by: goc3

2

62

#### Problem 44365. An asteroid and a spacecraft

Created by: AMITAVA BISWAS

5

151

#### Problem 44310. Digit concentration in Champernowne's constant

Created by: Mehmet OZC

5

114

#### Problem 44344. The 5th Root

Created by: goc3

Tags root, power, cody5

12

532

#### Problem 44350. Breaking Out of the Matrix

Created by: James

8

322

#### Problem 44341. Hexagonal numbers on a spiral matrix

Created by: Mehmet OZC

2

98

Created by: goc3

6

296

Created by: goc3

2

76

#### Problem 44309. Pi Digit Probability

Created by: Mehmet OZC

10

422

#### Problem 44337. Sums of Distinct Powers

Created by: James

6

143

#### Problem 44316. Pandigital Multiples of 11 (based on Project Euler 491)

Created by: James

5

44

#### Problem 44340. Recaman Sequence - III

Created by: Mehmet OZC

2

76

Created by: goc3

6

175

#### Problem 44380. ASCII Birthday Cake

Created by: @bmtran (Bryant Tran)

Tags art, birthday, ascii

10

211

#### Problem 44345. MATLAB Counter

Created by: Peng Liu

20

239

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