(1) There is no real relevance to probability here. A future-me will wake up on planet A. A future-me will also wake up on planet B.
(2) Again, a future-me will wake up on planets A, C, and D.
(3) This depends upon my expectation of how useful money is to future-mes on the various planets. If I pay X then A-me nets 100-X dollars more, and B-me loses X dollars. $50 is neutral across the sum of future-mes, but B-me is likely to regret that slightly more than A-me will benefit from it. Though really, why is someone selling me a ticket that will pay out $100 for less than $100? I’d have a lot of credence that this is a scam. How does the economy work if you can legitimately copy money freely anyway?
(4) As with (3), only with 3 future mes instead of 2.
(1) There is no real relevance to probability here. A future-me will wake up on planet A. A future-me will also wake up on planet B.
(2) Again, a future-me will wake up on planets A, C, and D.
(3) This depends upon my expectation of how useful money is to future-mes on the various planets. If I pay X then A-me nets 100-X dollars more, and B-me loses X dollars. $50 is neutral across the sum of future-mes, but B-me is likely to regret that slightly more than A-me will benefit from it. Though really, why is someone selling me a ticket that will pay out $100 for less than $100? I’d have a lot of credence that this is a scam. How does the economy work if you can legitimately copy money freely anyway?
(4) As with (3), only with 3 future mes instead of 2.