2025-12-16 20:25 UTC
@alisonkiddle@mathstodon.xyz
Probabilities are:
(½)¹⁰ vs (⅙)⁴
For concise notation, I'll invert them:
2¹⁰ vs 6⁴
We can decompose the right side:
(2 * 3)⁴ = 2⁴ * 3⁴
We have 2s exp. so again can reduce both sides:
2⁶ vs 3⁴
Again decomposing:
2³ * 2³ = 8 * 8 vs 9 * 9
We see that the right side is bigger, so when we invert them, the left side is bigger i.e. 10 coin tosses for same side has higher probability:
(½)¹⁰ > (⅙)⁴
Replies (1)
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@alisonkiddle@mathstodon.xyz 2025-12-16 21:17
@rojun@mastodon.social I love that it all reduces down to comparing 2^3 and 3^2, which is one of those things that seems to crop up all the time