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Problems


IDDescription / TitleSolved By
351
Hexagonal orchards
352
Blood tests
353
Risky moon
354
Distances in a bee's honeycomb
355
Maximal coprime subset
356
Largest roots of cubic polynomials
357
Prime generating integers
358
Cyclic numbers
359
Hilbert's New Hotel
360
Scary Sphere
361
Subsequence of Thue-Morse sequence
362
Squarefree factors
363
Bézier Curves
364
Comfortable distance
365
A huge binomial coefficient
366
Stone Game III
367
bozo sort
368
A Kempner-like series
369
Badugi
370
Geometric triangles
371
Licence plates
372
Pencils of rays
373
Circumscribed Circles
374
Maximum Integer Partition Product
375
Minimum of subsequences
376
Nontransitive sets of dice
377
Sum of digits, experience 13
378
Triangle Triples
379
Least common multiple count
380
Amazing Mazes!
381
(prime-k) factorial
382
Generating polygons
383
Divisibility comparison between factorials
384
Rudin-Shapiro sequence
385
Ellipses inside triangles
386
Maximum length of an antichain
387
Harshad Numbers
388
Distinct Lines
389
Platonic Dice
390
Triangles with non rational sides and integral area
391
Hopping Game
392
Enmeshed unit circle
393
Migrating ants
394
Eating pie
395
Pythagorean tree
396
Weak Goodstein sequence
397
Triangle on parabola
398
Cutting rope
399
Squarefree Fibonacci Numbers
400
Fibonacci tree game