Π day

[EdS2]

> Sharp's series

It is a nice one, and a nice connection between Sharp and Sharp.

> Happy π Day to you all!

And you!

Bit of a spoiler, but here's a related quiz:
Pick a random number between 0 and 1, then pick another and divide the first by the second. Round off the result to an integer. What's the probability that it's even?

> What's your favorite pi series?

There's an unusual one by Valentin... 3 years ago, which seems appropriate.

It feels worthwhile also to showcase one of Gerson's [but see downthread!] pandigital approximations ("good to 17 digits"):

That is: (ln{[2×5!+(8-1)!]^(sqrt(9))+4!+(3!)!})/(sqrt(67))