this post was submitted on 24 Oct 2023
16 points (80.8% liked)
Asklemmy
44149 readers
804 users here now
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
- Open-ended question
- Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
- Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
- Not ad nauseam inducing: please make sure it is a question that would be new to most members
- An actual topic of discussion
Looking for support?
Looking for a community?
- Lemmyverse: community search
- sub.rehab: maps old subreddits to fediverse options, marks official as such
- [email protected]: a community for finding communities
~Icon~ ~by~ ~@Double_[email protected]~
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
The guy in the video did his math wrong.
And 80% gain gives you 1.8x. A 50% gain gives you 0.5x. When combining them, you multiply them, giving you 0.9x, which is a 10% loss with each set of 2 flips.
Try it yourself: $100 x 1.8 = $180. $180 x 0.5 = $90. So you start with $100 and end with $90.
What the fuck? 50% gain gives you 1.5x not 0.5x For 50% decrease, you multiply by 0.5
Whoops, typo.
What is wrong with it? That's exactly what he shows in the video. When betting it all, equal wins and losses is a net loss. The point is betting some fraction such that the gains overtake the losses