User contributions for Oscarlevin

A user with 1,022 edits. Account created on 28 March 2010.
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18 August 2024

5 October 2023

3 September 2019

17 July 2019

26 October 2017

  • 08:1508:15, 26 October 2017 diff hist +294 N Ants on a cubeCreated page with "This is a generalization of the first puzzle in Presh Talwalkar's ''Math Puzzles Volume 1''. == Puzzle == 8 ants sit on the vertices of a cube (floating in space). Each ant..." current

1 October 2017

6 August 2017

  • 07:3207:32, 6 August 2017 diff hist +771 N Cents per centsCreated page with "This is my version of a puzzle I originally saw on [https://www.theguardian.com/science/2017/jun/19/can-you-solve-it-pythagorass-best-puzzles Alex Bellos's Puzzle Block]. ==P..."

25 July 2017

24 July 2017

3 April 2016

  • 14:2314:23, 3 April 2016 diff hist +422 N Draft:Bpow101Created page with "Suppose you have 19 hexagons arranged in roughly a 3x3x3 hexagon (so there is a center hexagon, surrounded by 6, surrounded by 12, just like in Settlers of Catan). Place the..." current

4 April 2015

31 March 2015

19 January 2015

16 November 2014

  • 11:2111:21, 16 November 2014 diff hist +2,474 N Rabbit rowCreated page with "Here is a puzzle based on a neat graph theory counting problem. ==Puzzle== Eleven white rabbits live in eleven white houses, all in a row. One day, the rabbits get together..." current

10 November 2014

  • 15:4615:46, 10 November 2014 diff hist +541 N Domino circuitCreated page with "==Puzzle== A domino consists of two squares, each with some number of dots between 0 and 6 in each square. A standard ''double-six'' set of dominoes contains exactly one domi..." current
  • 15:3915:39, 10 November 2014 diff hist +600 N Penguin lineupsCreated page with "Here is a counting problem based on Gilbreath permutations. ==Puzzle== You have 10 penguins, each a different height. You want to take a photo of the penguins in a single s..." current
  • 15:1815:18, 10 November 2014 diff hist +183 N Draft:Bpow65Created page with "Given any nine points in a unit square, must there be among the triangles having vertices on the given points at least one whose area is no more than 1/8? {{Bpow}} Categor..." current
  • 15:1515:15, 10 November 2014 diff hist +568 N Draft:Bpow64Created page with "A field in the shape of a right triangle is to be subdivided into two fields of equal size by building a straight fence between two sides of the field. If the lengths of the..." current
  • 15:1415:14, 10 November 2014 diff hist +395 N Draft:Bpow63Created page with "A straight bar of metal, initially 800 feet long, expands 8 inches in length. The ends are fixed so that the bar becomes distorted into the shape of an arc of a circle, for wh..." current
  • 15:1215:12, 10 November 2014 diff hist +247 N Draft:Bpow62Created page with "A rectangular block of wood has for its three dimensions a different odd prime number of inches. Its volume and (total) surface area are, respectively, a three digit number an..." current
  • 15:0615:06, 10 November 2014 diff hist +9 Draft:Bpow61No edit summary current
  • 15:0515:05, 10 November 2014 diff hist +443 N Draft:Bpow61Created page with "Two ferry boats sail back and forth across a river, each traveling at a constant speed, and turning back without any loss of time. They leave opposite shores at the same insta..."
  • 14:5914:59, 10 November 2014 diff hist +4 m Draft:Bpow60No edit summary current
  • 14:5914:59, 10 November 2014 diff hist +754 N Draft:Bpow60Created page with "Find an ordered list of positive integers, <m>a_1, a_2,\ldots</m> with the fewest possible integers, satisfying all the following properties: # Every positive integer is the..."
  • 14:5314:53, 10 November 2014 diff hist −7 Draft:Bpow59No edit summary current
  • 14:5014:50, 10 November 2014 diff hist +293 N Draft:Bpow59Created page with " Describe as explicitly as you can all cubic polynomials with integer coefficients having (a) three distinct real roots, (b) local maximum and minimum values at integers, and..."
  • 14:4914:49, 10 November 2014 diff hist +494 N Draft:Bpow58Created page with "Consider the graph of <m>f(x) = x^2</m>. Imagine a circle of radius 1 rolling along the x-axis toward the origin until the circle just comes into contact with the graph. Where..." current
  • 14:4614:46, 10 November 2014 diff hist +957 N Draft:Bpow57Created page with "My dog, Scooter, got a new leash for his birthday. This leash is made of a flexible rubber coil, much like that on the handset of your telephone, which stretches when Scooter..." current
  • 14:4314:43, 10 November 2014 diff hist +2 Draft:Bpow55No edit summary current
  • 14:4214:42, 10 November 2014 diff hist +295 N Draft:Bpow55Created page with "Take any two positive integers <m>N</m> and <m>a</m>. Show that <m>N^a</m> is the sum of <m>N</m> consecutive odd integers. As an easy example, note that <m>7^{13} = 96889..."
  • 14:2514:25, 10 November 2014 diff hist +9 m Draft:Bpow54No edit summary current
  • 14:2414:24, 10 November 2014 diff hist +263 N Draft:Bpow54Created page with " What is the largest figure eight which fits into a right triangle? For the purposes of the problem, the loops of the figure eight are of the same size. For the more adventur..."

9 November 2014

  • 20:1620:16, 9 November 2014 diff hist +583 N Five card drawCreated page with "This puzzle was inspired by a magic trick performed by Ricky Jay on the tonight show. ==Puzzle== Take a well shuffled deck of cards and deal off 10, face up, in a single lin..." current

8 November 2014

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