pull down to refresh

127 sats \ 5 replies \ @SimpleStacker OP 16 Apr \ parent \ on: Bitcoin Math Puzzle #002: Selfish Mining Pt. 2 math bitcoin

There is a small mistake in (b). If x approaches 0.5, your solution would imply that Alice wins with near 100% probability.

write
compose
71 sats \ 4 replies \ @Murch 16 Apr

That sounds like a big mistake, not a small mistake! :grin:

I agree, and retract my guess. I’m gonna have to wait for someone else to correct me, though.

reply
25 sats \ 3 replies \ @SimpleStacker OP 16 Apr

Here's a hint: Is the probability of Alice winning the C-A-A vs. C-B race different from the probability of Alice winning the C-A vs. C-B race?

reply
71 sats \ 2 replies \ @Murch 17 Apr

Ah right, sure. The likelihood of C-A-A being found before C-B should then just be .

reply
25 sats \ 1 reply \ @SimpleStacker OP 17 Apr

Congrats, this and the above (a) were the correct answers.

reply
4 sats \ 0 replies \ @Murch 17 Apr

Yay. :)

reply