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seen Mar 29 at 2:28

Nov
23
revised using markov chains to solve a project-euler problem?
edited tags
Nov
23
comment using markov chains to solve a project-euler problem?
some hints who are trying to solve this problem: if only ten players are involved, the expected plays required rounded to ten significant digits is 40.56192661
Nov
23
accepted using markov chains to solve a project-euler problem?
Nov
23
answered using markov chains to solve a project-euler problem?
Nov
23
accepted simple probability and coin flip
Nov
22
revised Solving $a_1x^{4999} + a_2x^{4998} + a_3x^{4007}+…+a_{5000}x^{0}=n$
edited tags
Nov
22
comment Solving $a_1x^{4999} + a_2x^{4998} + a_3x^{4007}+…+a_{5000}x^{0}=n$
of course it is from not-so-friendly geometric-like sequence and I solved it using WolframAlpha trial and verified it myself using binary search. And it turns out that solving the equation this way was wrong for this kind of problem.
Nov
22
asked Solving $a_1x^{4999} + a_2x^{4998} + a_3x^{4007}+…+a_{5000}x^{0}=n$
Nov
22
awarded  Scholar
Nov
22
accepted if multiple dice are thrown, how can I calculate their variance and mean?
Nov
21
comment if multiple dice are thrown, how can I calculate their variance and mean?
surely it has to fair dice...
Nov
21
asked if multiple dice are thrown, how can I calculate their variance and mean?
Nov
20
comment simple probability and coin flip
thank you. It wasn't obvious for me when I started thinking about this, but after your explanation it is crystal clear. It is used to solve this: projecteuler.net/problem=323
Nov
19
revised Proving the existence of a non-decreasing sequence
added 403 characters in body
Nov
19
comment Proving the existence of a non-decreasing sequence
What do you mean by one example of ${b_n}$ ? judging from the question, isn't my trivial $a_n$ a sequence of positive number whose sum converges?
Nov
19
comment Proving the existence of a non-decreasing sequence
if $a=2$, I think it is the solution you're looking for..
Nov
19
answered Proving the existence of a non-decreasing sequence
Nov
19
comment simple probability and coin flip
1) if you get 0 heads, flip again. 2) number of round. 3) we can't go over, since we're flipping (3-s) coins.
Nov
19
comment Use the ratio test to determine if the infinite series $\displaystyle \frac{3^n}{2^n +1}$ converges or diverges.
latex is really hard!
Nov
19
awarded  Editor