> A mathematician walked into a bar. I can't leave this unchallenged. :-)
A physicist, a biologist, and a mathematician sat on a bench opposite an empty derelict house. They saw a person go into the house. A while later two people came out. Physicist: Ah, observational error. Biologist: No, it is an unusual case of mitosis. Mathematician: If another person now enters the house, it would be empty. [I told this to an accountant friend and she said, I don't get it. It was embarrassing.] Afterwards, the physicist, the biologist, and the mathematician walked into a bar. The bartender took one look at them and said, "What is this, some sort of joke?" After that, the physicist, the biologist, the mathematician, and a poet friend they met on the way walked into another bar. As they were walking in, the poet face-palmed and said, "Wait! I am in the wrong joke!" On Fri, Sep 27, 2019 at 12:36 AM Bernie Eckhart < bernie.eckhart....@gmail.com> wrote: > BEDMAS a.k.a. PEDMAS gives 1 imho. > > Surprisingly, given that Ken is in both live and, sadly after life, > Canadian, my expectation is BEDMAS. > > Brackets (properly called "parentheses") > > (2+2) i.e. (4) > > Giving 8 ÷ 2( 4) > > again, this post is being written by a non-mathematician. > > .......... > A mathematician walked into a bar. > An order was pondered. > An order was never placed. > > .......... > A mathematician walked into a bar. > The bartender was also a mathematician. > A fight broke out. > > .......... > BEDMAS is left to right. > > so what is to the right of the ÷ sign? > > I suggest it's an expression that evaluates to 8 > > Big question is what rule was broken. > > Answer imho round brackets were not used. > > To my eyes, in 2(4) > 2 modifies (4) > yielding 8 > > 8÷8 is 1 > > OTOH > 8 ÷ 2 x (2+2) > becomes > 8 ÷ 2 x (4) > which becomes > 4 x (4) > yielding 16 > > Rule learned in elementary school: > confusion must be avoided with round brackets. > > non authouritative reference: > en.wikipedia.org/wiki/order_of_operations > > On Sep 26, 2019 10:23, "'Mike Day' via Chat" <c...@jsoftware.com> wrote: > > Hardly worth commenting as it's a matter of convention, but > I did this check with my Silverfrost/Plato Fortran 95, albeit in > Fortran as I wrote it mid-20th C: > > Program: > " > print *, 8 / 2 * (2 + 2) > end > " > Output: > " > 16 > > Press RETURN to close window... > " > > Also, 8 / 2 * 2 + 2 is of course 10 as far as my Fortran is concerned. > > How different from J and APL ... and K (mine needs updating though!): > "K 2.8t 2000-08-23 Copyright (C) 1993-2000 Kx Systems > Evaluation. Not for commercial use. > \ for help. \\ to exit. > > 8 % 2 * (2 + 2) > 1.0 > 8 % 2 * 2 + 2 > 1.0 > " > > Only chatting/cheating! > > Mike > > > > On 26/09/2019 06:07, Bernie Eckhart wrote: > > as a non-mathemation, > > seems obvious to me, > > > > reading left to right, > > we have > > > > thing divided by an expression > > > > expanding the expression give 8; > > > > except for zero divided by zero, > > > > value divided by same value is AFAIK > > always ONE, > > > > if this were a sentence, > > 8 is the subject > > divided by is the verb, and > > 2(2+2) is the object. > > > > On Sep 25, 2019 04:28, "R.E. Boss" <r.e.b...@outlook.com> wrote: > > > > From > > > > https://www.quantamagazine.org/the-math-behind-a-faster-multiplication-algorithm-20190923/ > > “This summer, battle lines< > > > > https://twitter.com/pjmdolI/status/1155598050959745026?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1155598050959745026&ref_url=https%3A%2F%2Fwww.nytimes.com%2F2019%2F08%2F02%2Fscience%2Fmath-equation-pedmas-bemdas-bedmas.html > > > > were drawn over a simple math problem: 8 ÷ 2(2 + 2) = ? If you divide 8 > by > > 2 first, you get 16, but if you multiply 2 by (2 + 2) first, you get 1. > So, > > which answer is right? The conflict grew so heated that it made the pages > > of The New York Times< > > > > https://www.nytimes.com/2019/08/02/science/math-equation-pedmas-bemdas-bedmas.html > >. > > And as the comments section shows, even a professional mathematician > > weighing in on the matter wasn’t enough to bring the two sides together.” > > > > > > > > R.E. Boss > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > -- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
