Comment on We shouldn't do this drunk
Mirodir@discuss.tchncs.de 3 weeks agoTangetially related: For the people who don’t know, I found out recently that x!! isn’t the same as (x!)! (repeated factorial), in fact, !! is a LOT less big than repeated factorial.
For example, while 30!! is 4.286 x 10^16 (so a number with 17 digits), doing 30! and then ! the result of that, would be a number with an unfathomable 10^33 digits.
icelimit@lemmy.ml 3 weeks ago
Til. What’s 10!!! ?
saigot@lemmy.ca 3 weeks ago
x!^(n) is the product of the positive numbers congruent to x (mod n) and less than or equal to x. put more simply x*(x-n)*(x-2n)…
so 10!!! = 10*7*4*1
icelimit@lemmy.ml 3 weeks ago
Til. What’s 10. ?
skulblaka@sh.itjust.works 3 weeks ago
Image
Mirodir@discuss.tchncs.de 3 weeks ago
No clue. Wolfram Alpha interprets it as (10!!)!, so I assume !!! isn’t an established operator, unlike the very unintuitive !!.
icelimit@lemmy.ml 3 weeks ago
Above dude says it’s 1074*1.