Gentlemen, please... if possible, try to stop this kind of debate. When the discussion was started with the suggestion to hold a bake-sale, I assumed that it...
3541
wholphin48
Jun 29, 2010 7:18 pm
Ralf, I apologize for beating a dead horse (expression that means carrying a discussion long after it has been useful to do so). I am new to this group and to...
3542
Nathan Fields (Nth Ba...
nth_fields
Jun 30, 2010 4:18 pm
Gerald wrote, ... raise some money to be used to ... is a ... Cool. If you are looking for more suggestions let me know on or offlist. --Nathan (Nth) "It's...
3543
wholphin48
Jun 30, 2010 8:47 pm
Nathan, I will take you up on that. Maybe we could get Daniel Tammett to serve up a few thousand pieces of Pi for us :) Jerry...
3544
George Lane
george972453
Jul 1, 2010 7:28 am
Good morning Priyanshi (perhaps 'good afternoon' in your part of the world). Â Yes, I rather thought that you might not be able to make another trip. Not to...
3545
George Lane
george972453
Jul 1, 2010 7:29 am
Ralf, you are quite right. I have taken the continuation of this sad & sorry affair into the private realm and away from the group. ... From: ralf_laue...
3546
Ralf Laue
ralf_laue
Jul 1, 2010 12:32 pm
Hello, I forward the following e-mail on behalf of Alain Dekker who asked me to post it to the list: Dear Mental Calculators, My name is Alain Dekker, a...
3547
wholphin48
Jul 1, 2010 6:53 pm
Alain, Thanks for your comment. FWIW, I am sorry I began this latest spat as it was probably old news to most of the list. I have done a little surfing since...
3548
Nodas Boukovalas
nodden_1984_...
Jul 2, 2010 7:58 am
Hello friends, I uploaded a zipped file with various photos from Magdeburg and the MCWC 2010. Feel free to visit the link below : ...
3549
priyanshi somani
priyanshi_so...
Jul 3, 2010 7:46 pm
Hello , Please send me photos, videos or newspaper articles of the Mental Calculation World Cup in Magdeburg. I would be grateful if you could send them to...
3550
javiergijn
Jul 3, 2010 10:26 pm
3551
R
retothejuggler
Jul 4, 2010 11:41 am
Hello all After a long break I regain interest in mental challenges and just restarted to practice mental multiplication. Having seen the new world record...
3552
A.W.A.P. Bouman
awapbouman
Jul 4, 2010 2:11 pm
Dear Javier, 1. Numbers: for me they are just numbers and not more than that, in this way, I have no favourite numbers, and I do never any operation by ...
3553
office@...
werbeka
Jul 4, 2010 4:52 pm
Hello Javier, why do I deal with numbers? Because I am good at it (well, in this company let's say that I am not very bad) and because I like competition. I...
3554
javiergijn
Jul 4, 2010 6:25 pm
Dear Willem , 1 Just numbers and not more neither less than numbers .You show me recently how much things you can see into a " simple " number plate ... ;)) ...
3555
javiergijn
Jul 4, 2010 6:26 pm
Hello Bernhard , Its always interesting to know about others motivation with numbers, since i can´t clearly explain why i started with them . Regards. Javier...
3556
Nodas Boukovalas
nodden_1984_...
Jul 4, 2010 7:51 pm
This question is like asking what's the meaning of culture, science, art or civilisation. For me, the answer is simple. Because we are humans. Nodas Boukovalas...
3557
Nodas Boukovalas
nodden_1984_...
Jul 4, 2010 8:27 pm
Hello Reto. For 8 * 8 digits, using the cross method there are about 128 individual multiplications and additions. So to do below 30 secs, over 4 calculations...
3558
javiergijn
Jul 4, 2010 8:27 pm
Hello Nodas , Iam sure that , but i know a lot of humans that are interested in culture ,science ,etc. , but don´t show interest in mental calculation , like...
3559
JF
jsh.flynn
Jul 5, 2010 8:14 am
I might not be entitled to respond considering my absence from this group but I don't care. I do not view numbers mechanically. The structures and properties...
3560
Nodas Boukovalas
nodden_1984_...
Jul 5, 2010 8:16 am
Hello again Javier, Both arithmetics and mental calculation belong in a further extent to mathematics, which is a branch of science. It just happens that not...
3561
webcash56
Jul 5, 2010 8:16 am
Dear Javier: For me, Numbers are a very useful, and fascinating language that few people become very fluent in. It has "Words" made of numerals instead of...
3562
Nathan Fields (Nth Ba...
nth_fields
Jul 5, 2010 9:04 am
As a child I was a natural at some parts of mental calculation. Mental addition and sequences intuitively came to me. Once I learned math formally, that ...
3563
George Lane
george972453
Jul 5, 2010 10:55 am
Hi folks. Â For me, matters of mental calculations lie on the borderline between art & science. Getting the right answer is a science, but reaching that...
3564
Oleg Stepanov
olegstepanov@...
Jul 5, 2010 11:22 am
J> 211 - 199 = 13, 223 - 211 = 13 (the same gap on both sides - I love it!) Please, if this is New Arithmetic, kill me... :-)...
3565
JF
jsh.flynn
Jul 5, 2010 1:37 pm
Oh man. Did I honestly say that? That will teach me to post on here when I'm tired. Thanks Oleg, for the record I am aware that I meant to say 12. Isn't new...
3566
George Lane
george972453
Jul 5, 2010 2:38 pm
Puzzle-style problems can be good too - here's a "prime example". Take three prime numbers, gaps of ten between each value and the next, and multiply them all...
3567
ralf_laue
Jul 5, 2010 2:48 pm
Hello everybody! At "memory-sports.com" you can read my report of the mental calculation world cup. For several reason it has been published a bit late but...
3568
A.W.A.P. Bouman
awapbouman
Jul 5, 2010 5:13 pm
Well George, do you mean 3×13×23, which is 897? Regards, Willem ... Van: George Lane Aan: mentalcalculation@yahoogroups.com Verzonden: maandag 5 juli 2010...
3569
JF
jsh.flynn
Jul 5, 2010 6:07 pm
The sum of the residues modulo all integers less than the square root of 897 is 210 which is a primordial. I think I get George's joke about it being a "prime"...
