How long is the river? What should we expect from coincidental diagonals of contiguous spaces? Posted on May 23, 2025 Tags: recursion generating-functions keyboard-problems
Can you permeate the bipyramid? How many paths can you find? Posted on May 18, 2025 Tags: counting recursion search
How many rides can you reserve? How many rides will you get if you throw Mickey a little money on the side? Posted on May 4, 2025 Tags: recursion
Sum one, somewhere What's the chance the somebody comes across just zero or one labels on an unending walk down a binary tree with nodes randomly blessed with a label? Posted on April 30, 2025 Tags: recursion trees
Hammer golf Live by the hammer, die by the hammer. Posted on April 21, 2025 Tags: game-theory recursive-games strategy
Infinite March madness How often will the $1$-seed make the final four when there are $(2^d-1)$ worse teams in their region? Posted on March 24, 2025 Tags: recursion trees
Diametric shore If you wake up in a random spot on a semi-circular island, how far is the beach, probably? Posted on March 16, 2025 Tags: geometry pdf cdf conditional-probability
Can you spin the graph? If you tumble your function is it still a function? Posted on February 2, 2025 Tags: spherical-geometry vectors
Can you hop to the lily pad? The further you go, the harder it gets. Posted on January 25, 2025 Tags: master-equation recursion
Lines of equidistance What's the chance that two random points in the square are equidistant from some random point on the side that's closest to one of them? Posted on December 1, 2024 Tags: geometry distance intermediate-value-theorem