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Jamshrivelson


Puzzle Solutions

Can you weave the web?

What is the probability that two random points form a line that goes through a particular point $\mathbf{p}$?

Posted on June 8, 2025

Tags: indicators geometry pdfs

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
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Josh Silverman  •  2025

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