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 Feb 25 revised Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? edited body Feb 25 revised Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? added 5 characters in body; added 7 characters in body; added 227 characters in body Feb 25 revised Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? added 54 characters in body; added 33 characters in body; added 10 characters in body; added 63 characters in body; added 21 characters in body Feb 25 comment Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? @joriki if I said a bunch of web workers talking to graphite, would it help? I'm not quite sure. Feb 25 revised Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? added 194 characters in body Feb 25 asked Forensic birthday paradox: we have $i$ distinct birthdays, how many people were counted? Feb 1 awarded Good Answer Jan 20 awarded Notable Question Jun 4 comment Is $0.999999999… = 1$? @milo 8.999... = 8 + 0.999... simply follows from the decimal representation of the numbers involved. Apr 9 awarded Notable Question Dec 17 comment Explanation of method for showing that $\frac{0}{0}$ is undefined No. I don't claim so. The whole post is a reductio ad absurdum. ("Let's say $0 \over 0$ was not indeterminate, then what should its value be?") Dec 17 comment Explanation of method for showing that $\frac{0}{0}$ is undefined @Anixx It's a common mathematical process: since the property is true for all $x > 0$ and for all $x < 0$ and $x \in \mathbb R$, then the property is also extended by continuity for $x = 0$. Of course doing it here does not lead to a correct result: that's the whole point of the answer. Dec 16 awarded Caucus Nov 11 awarded Yearling Oct 29 revised How to accurately calculate the error function erf(x) with a computer? Removed signature (please add URLs to your profile insted) Oct 29 suggested approved edit on How to accurately calculate the error function erf(x) with a computer? Oct 10 comment How can I approximate the logarithm of the sum? @Rahul Wait, is $\log(1+\frac ab) \simeq \frac a b$?! That sounds... very strange. Oct 10 asked How can I approximate the logarithm of the sum? Oct 2 awarded Notable Question Sep 30 awarded Explainer