Here they are.

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# Day: July 11, 2019

# the 3d Pythagorean Theorem

(It’s just a double application of the 2d Pythagorean Theorem, but it’s worth noting explicitly.)

Here’s the scoop.

keywords: Mathematics, Geometry, diagonal, rectangular prism

# lorem ipsum

Placeholders are the demigods of logistics.

keywords: utility, savings

# lorem ipsum (re: circle-logic)

“An idiot, or…” – from a certain scene of ‘The Mentalist’

keywords: act, pretense, interrogation room

# points of intersection

Finding points of intersection undergirds much of mathematical work.

keywords: Mathematics, pattern, big picture, observation

# How many 2-digit positive integers are there such that the product of their digits is 24?

Here’s the scoop.

keywords: Mathematics, Number Theory, easy problem

# easy problem about a 2-digit positive integer

If a two-digit positive integer has its digits reversed, the resulting integer differs from the original by 27. By how much do the two digits differ?

Here’s the scoop.

keywords: Mathematics, Number Theory