Password entropy of famous xkcd comic - Mathematics Stack …
Mar 23, 2016 · The famous xkcd comic about password strength calculates the entropy of the 11-character password "Tr0ub4dor&3" with 28 bits of entropy. When following the ASCII-95-chart, we have 95 possible letters, numbers and symbols for each character position.
calculus - "What if" math joke: the derivative of $\ln(x)^e ...
Mar 7, 2015 · Randall Munroe, the creator of xkcd in his latest book What if writes (p. 175) that the mathematical analog of the phrase "knock me over with a feather" is seeing the expression $ \ln( x )^{e}$.
Infinity xkcd style: can a turing machine exist?
Jul 3, 2015 · I recently read this xkcd comic. It's about a guy who simulates a universe by a Turing machine (specifically, Rule 101, a cellular automaton), by laying down infinite rows of rocks, each row corresponding to a 'state' of the universe. This made me wonder, because my intuition with dealing with infinities always gets a bit muddy.
How would you input xkcd.com/287 into WolframAlpha?
In this XKCD comic, a stick figure asks an NP-complete problem to order exactly 15.05 worth of appetizers out of a menu that includes the following list of prices: {2.15, 2.75, 3.35, 3.55, 4.20, 5.80}. What is the mathematical name and procedure for this kind of problem, and how would you input something like this to WolframAlpha if possible?
general topology - Are hereditarily connected spaces and …
Nov 19, 2024 · $\begingroup$ I found a counterexample for ultraconnected spaces. It ended up being a quite long proof, and I've already nearly finished typing it up before my browser suddenly crashed...
For what values does the geothmetic meandian converge?
Mar 11, 2021 · Tour Start here for a quick overview of the site
How many possible combinations in 8 character password?
This is because if for example the punctuation special character first appears in the fifth position in the password with the first lower case letter, first upper case letter, and first digit appearing in the first 3 positions of the password then there are only $(95-33) = 62$ characters that can appear in the fourth position of the password.
combinatorics - Combination of smartphones' pattern password ...
Calculate Password Possibilities With Specific Character Pattern. 0. Password Combination with Limitations. 0.
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Calculate password combination with password policy
policy 1) user can choose password freely. my answer: $95^8$ combinations, since 26+26+10+33 = 95. policy 2) The password must at least have one digit or at least one special character. my answer: number of passwords with at least one digit = $10^8$ number of passwords with at least one special character = $33^8$