User contributions
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- 20:10, 24 July 2017 (diff | hist) . . (+6) . . One-way roads (→Puzzle)
- 15:23, 3 April 2016 (diff | hist) . . (+422) . . N Draft:Bpow101 (Created 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)
- 19:15, 4 April 2015 (diff | hist) . . (+20) . . m Condominium (current)
- 10:21, 31 March 2015 (diff | hist) . . (0) . . N File:Trolls.png (current)
- 10:20, 31 March 2015 (diff | hist) . . (+2,223) . . N Too many trolls (Created page with "right|200px This is a logic puzzle I made up for UNC's Math Challenge Problem ==Puzzle== While walking through a fictional forest, you come upon a large...") (current)
- 11:04, 19 January 2015 (diff | hist) . . (-19) . . m Draft:Bpow29 (current)
- 12:21, 16 November 2014 (diff | hist) . . (+2,474) . . N Rabbit row (Created 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)
- 16:46, 10 November 2014 (diff | hist) . . (+541) . . N Domino circuit (Created 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)
- 16:39, 10 November 2014 (diff | hist) . . (+600) . . N Penguin lineups (Created 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)
- 16:18, 10 November 2014 (diff | hist) . . (+183) . . N Draft:Bpow65 (Created 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)
- 16:15, 10 November 2014 (diff | hist) . . (+568) . . N Draft:Bpow64 (Created 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)
- 16:14, 10 November 2014 (diff | hist) . . (+395) . . N Draft:Bpow63 (Created 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)
- 16:12, 10 November 2014 (diff | hist) . . (+247) . . N Draft:Bpow62 (Created 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)
- 16:06, 10 November 2014 (diff | hist) . . (+9) . . Draft:Bpow61 (current)
- 16:05, 10 November 2014 (diff | hist) . . (+443) . . N Draft:Bpow61 (Created 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...")
- 15:59, 10 November 2014 (diff | hist) . . (+4) . . m Draft:Bpow60 (current)
- 15:59, 10 November 2014 (diff | hist) . . (+754) . . N Draft:Bpow60 (Created 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...")
- 15:53, 10 November 2014 (diff | hist) . . (-7) . . Draft:Bpow59 (current)
- 15:50, 10 November 2014 (diff | hist) . . (+293) . . N Draft:Bpow59 (Created 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...")
- 15:49, 10 November 2014 (diff | hist) . . (+494) . . N Draft:Bpow58 (Created 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)
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