Two minuses make a plus

Two negatives making a positive is reflected aptly in typography: +

Bank fees

Most banks have a transaction fee that nearly always goes unseen by the customer

2023, the number

Some characteristics of the number 2023


The number 25 has a magical appearance. 2 plus 5 equals 7, my lucky number. And, of course, 25 is 5²

Alternative math

Being politically correct all the time is similar to being brain-dead

Why zero factorial is one

What a great lecture

A better abbreviation for sine & cosine

For some weird reason the abbreviation for sine is sin and cos for cosine. This is madness compared to the beautiful and logical abbreviation for tangent and cotangent