Cody5:Easy

Average Problem Difficulty:

Easy problems for Cody 5th Anniversary

Cody5:Easy Master

+50 points

Problem Title	Likes	Solvers
Problem 361. Energy of a photon Created by: AMITAVA BISWAS Tags physics, frequency, energy	16	1471
Problem 44350. Breaking Out of the Matrix Created by: James Tags cody5, whoa, windowing	9	382
Problem 44352. The Top 5 Primes Created by: Peng Liu Tags cody5	7	344
Problem 44358. I Plead the Fifth Created by: goc3 Tags regexp, strings, string	6	430
Problem 44360. Pentagonal Numbers Created by: goc3 Tags series, number, sequence	12	681
Problem 44363. Is this is a Tic Tac Toe X Win? Created by: Doug Hull Tags cody5, noughts and crosses	2	536
Problem 44368. Inscribed Pentagon? Created by: goc3 Tags geometry, circle, radius	2	309
Problem 44369. Circle/Pentagon Overlap Created by: goc3 Tags geometry, circle, radius	1	330
Problem 44370. Octoberfest festival Created by: Andriy Kavetsky Tags fibonacci, cody5	4	502
Problem 44372. Polarisation Created by: Jan Orwat Tags cody5, quantum, angles	4	272
Problem 44375. Missing five Created by: Alfonso Nieto-Castanon Tags cody5	9	382
Problem 44380. ASCII Birthday Cake Created by: @bmtran (Bryant Tran) Tags art, birthday, ascii	10	230
Problem 44384. Find the nearest prime number Created by: Matthew Eicholtz Tags prime numbers, cody5	9	667
Problem 44385. Extra safe primes Created by: Matthew Eicholtz Tags prime numbers, cody5, safe prime	13	761
Problem 44305. 5 Prime Numbers Created by: goc3 Tags prime, primes, string	7	455
Problem 44349. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Created by: James Tags time, cody5	14	961
Problem 44345. MATLAB Counter Created by: Peng Liu Tags cody5, nested function	23	305
Problem 369. Basic electricity in a dry situation Created by: AMITAVA BISWAS Tags physics, current, cody5	8	598
Problem 564. How to subtract? Created by: AMITAVA BISWAS Tags addition, cody5, X-Y	7	1539
Problem 2736. Pernicious Anniversary Problem Created by: Jan Orwat Tags easy, sequences, oeis	13	841
Problem 44306. Is it really a 5? Created by: goc3 Tags regexp, string, number	7	319
Problem 44307. The glass half full Created by: HH Tags contest, cody5	9	298
Problem 44309. Pi Digit Probability Created by: Mehmet OZC Tags pi, string manipulation, histogram	18	880
Problem 44314. A Simple Tide Gauge with MATLAB Created by: AMITAVA BISWAS Tags ocean, prediction, regression	4	396
Problem 44315. Predicting life and death of a memory-less light bulb Created by: AMITAVA BISWAS Tags random, probability, decay	3	377
Problem 44319. Write c^3 as sum of two squares a^2+b^2 Created by: Mehmet OZC Tags number theory, cody5	2	331
Problem 44321. Van Eck's Sequence's nth member Created by: Mehmet OZC Tags integer sequence, cody5, van eck's sequence	12	333
Problem 44334. Sums of Multiple Pairs of Triangular Numbers Created by: James Tags triangular numbers, cody5	1	249
Problem 44338. Recaman Sequence - I Created by: Mehmet OZC Tags integer sequence, cody5	3	322
Problem 44339. Recaman Sequence - II Created by: Mehmet OZC Tags integer sequence, cody5, recaman sequence	1	282
Problem 44342. Spot the First Occurrence of 5 Created by: Peng Liu Tags cody5	2	436

Recent Group Finishers156

Recent Activity

shinya matsumoto submitted Solution 15119327 to Problem 44350. Breaking Out of the Matrix

on 1 Jun 2026 at 2:54

shinya matsumoto submitted Solution 15119325 to Problem 44352. The Top 5 Primes

on 1 Jun 2026 at 2:48

shinya matsumoto submitted Solution 15119305 to Problem 44358. I Plead the Fifth

on 1 Jun 2026 at 2:24

shinya matsumoto submitted Solution 15117212 to Problem 44368. Inscribed Pentagon?

on 29 May 2026 at 8:13

shinya matsumoto submitted Solution 15117208 to Problem 44369. Circle/Pentagon Overlap

on 29 May 2026 at 8:01

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