/sqt/

a puzzler from the liberal public radio to-day: move exactly two of the numerial digits in "65 - 43 = 21" in order to make the equation true (the subtraction sign and the equality sign stay put):

npr.org/series/4473090/sunday-puzzle

Other urls found in this thread:

reddit.com/r/badmathematics/comments/764cu9/one_of_my_tutoring_students_has_this_question_on/
continuummechanics.org/polardecomposition.html
tex.stackexchange.com/questions/58098/what-are-all-the-font-styles-i-can-use-in-math-mode
wolframalpha.com/input/?i=20th derivative sin(x^4)
en.wikipedia.org/wiki/Wave_equation#Derivation_of_the_wave_equation
twitter.com/SFWRedditImages

Can someone explain to me how to derive a Mean Square Error(MSE) using Residual Sum of Squares(RSS) through Ordinary Least Squares(OLS)? I've coded an OLS estimator that outputs my beta. I don't know how to get MSE. Any help would be greatly appreciated, thanks.

Does this count? [latex]65-4^3=1^2[\latex]

or whatever the fuck the tag is [math]65-4^3=1^2[\math]

fucking niggers [eqn]65-4^3=1^2[\eqn]

The bar is to the other side: /

>a dumb nigger ranting about niggers
kys
[math]65-4^3=1^2[/math]

Does the position you sleep in affect your dreams?/sleep state?

Ie. left,right and on your back.

Why are circular permutations different to "normal" permutations?
Like if you have a row of chairs vs a circle of chairs, why does it make a difference to how you calculate the number of permutations?

In the circular case, 2 permutations are considered to be the same if they're equivalent up to a rotation, that is to say, if one can be obtained from the other by a rotation.