Problems

1 – 28 of 28

Problem Title Likes Solvers Difficulty

Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

Tags easy, sequences, oeis

774

Problem 44370. Octoberfest festival

Created by: Andriy Kavetsky

Tags fibonacci, cody5

446

Problem 44314. A Simple Tide Gauge with MATLAB

Created by: AMITAVA BISWAS

Tags ocean, prediction, regression

365

Problem 564. How to subtract?

Created by: AMITAVA BISWAS

Tags addition, cody5, X-Y

1473

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

Created by: Doug Hull

Tags cody5, noughts and crosses

487

Problem 44358. I Plead the Fifth

Created by: goc3

Tags regexp, strings, string

384

Problem 44384. Find the nearest prime number

Created by: Matthew Eicholtz

Tags prime numbers, cody5

596

Problem 44369. Circle/Pentagon Overlap

Created by: goc3

Tags geometry, circle, radius

298

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

697

Problem 44334. Sums of Multiple Pairs of Triangular Numbers

Created by: James

Tags triangular numbers, cody5

219

Problem 44307. The glass half full

Created by: HH

Tags contest, cody5

243

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

Created by: Mehmet OZC

Tags integer sequence, cody5, van eck's sequence

305

Problem 44342. Spot the First Occurrence of 5

Created by: Peng Liu

Tags cody5

394

Problem 44305. 5 Prime Numbers

Created by: goc3

Tags prime, primes, string

424

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

Created by: Mehmet OZC

Tags number theory, cody5

300

Problem 44360. Pentagonal Numbers

Created by: goc3

Tags series, number, sequence

614

Problem 44368. Inscribed Pentagon?

Created by: goc3

Tags geometry, circle, radius

277

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

Created by: James

Tags time, cody5

895

Problem 44338. Recaman Sequence - I

Created by: Mehmet OZC

Tags integer sequence, cody5

285

Problem 44375. Missing five

Created by: Alfonso Nieto-Castanon

Tags cody5

318

Problem 44339. Recaman Sequence - II

Created by: Mehmet OZC

Tags integer sequence, cody5, recaman sequence

249

Problem 44372. Polarisation

Created by: Jan Orwat

Tags cody5, quantum, angles

248

Problem 44352. The Top 5 Primes

Created by: Peng Liu

Tags cody5

292

Problem 44350. Breaking Out of the Matrix

Created by: James

Tags cody5, whoa, windowing

324

Problem 44306. Is it really a 5?

Created by: goc3

Tags regexp, string, number

296

Problem 44309. Pi Digit Probability

Created by: Mehmet OZC

Tags pi, string manipulation, histogram

423

Problem 44380. ASCII Birthday Cake

Created by: @bmtran (Bryant Tran)

Tags art, birthday, ascii

211

Problem 44345. MATLAB Counter

Created by: Peng Liu

Tags cody5, nested function

239

1 – 28 of 28

Difficulty Rating

Problem Groups

Difficulty Rating

Problem Groups

Problems

Problem 2736. Pernicious Anniversary Problem

Problem 44370. Octoberfest festival

Problem 44314. A Simple Tide Gauge with MATLAB

Problem 564. How to subtract?

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

Problem 44358. I Plead the Fifth

Problem 44384. Find the nearest prime number

Problem 44369. Circle/Pentagon Overlap

Problem 44385. Extra safe primes

Problem 44334. Sums of Multiple Pairs of Triangular Numbers

Problem 44307. The glass half full

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

Problem 44342. Spot the First Occurrence of 5

Problem 44305. 5 Prime Numbers

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

Problem 44360. Pentagonal Numbers

Problem 44368. Inscribed Pentagon?

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

Problem 44338. Recaman Sequence - I

Problem 44375. Missing five

Problem 44339. Recaman Sequence - II

Problem 44372. Polarisation

Problem 44352. The Top 5 Primes

Problem 44350. Breaking Out of the Matrix

Problem 44306. Is it really a 5?

Problem 44309. Pi Digit Probability

Problem 44380. ASCII Birthday Cake

Problem 44345. MATLAB Counter