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bio website math.stackexchange.com/users/…
location Antarctica
age 78
visits member for 1 year, 9 months
seen Jan 31 at 5:07

Self-learning mathematics. Many thanks to those who make time to help others on the site.


Dec
20
comment Pigeon-hole Principle: Does this proof have a typo?
Ah yes, that's what I figured. I was thinking that if it were less than, say a radius of 0.01, then you could definitely arrange the dots so that the circumcircles don't contain them.
Dec
9
comment I can't figure out this combinatorics problem… Or at least why my solution doesn't work.
@JoshKeneda Why is it that (1/10)*(1/9) can't represent 8, THEN 1? It seems like if I wanted to pick an 8, and then a 1, the probability would be the same.
Dec
9
comment I can't figure out this combinatorics problem… Or at least why my solution doesn't work.
I'm not sure I understand your question, but in my solution, it would be for 1 case. The second and third cases would be 2,x1,x2,9 and 3,y1,y2,10, where x1,x2 are numbers between 2 and 9, and y1,y2 are numbers between 3 and 10.