Dear Calculationfriends, It is not the first time that I let know not to be amused when I see either videos or read articles in which some prodigees show...
Dear calculator friends, What do I see on internet about Mental Calculation and comparable activities? Heaps of longer and shorter videos which have without...
Hi everyone! My question is it how it is able to raise two digit numbers as for example 37 to a power of 3-5? Are there any tricks or is there no general...
Hey everyone, I have just added an addition program to the files available. I am working on making a much more powerful program but would like to let everyone...
Hello, I just came across http://magicalmethodsfoundation.org where a World Oral Calculation Competition (to be held in new Delhi in November 2009) has been...
On www.likanas.de > Das Jahr im Kopf I have put a 85 pages pdf document in English language HOW TO COMPUTE KEY CALENDAR DATES - CHRISTIAN AND JEWISH - BY...
Hello, I have just downloaded the text - it seems to be a recommendable reading for everyone who is more deeply interested in calendar calculation. Thank you...
Thank you, Ralf, I have just corrected a mistake in chapter 4, § 18 "The Backhaus method" and taken the oportunity to comment somewhat more clearly on its...
You can get the pdf document by right clicking on HOW TO COMPUTE KEY CALENDAR DATES and download. Any critical suggestions are welcome. Ulrich Voigt...
Dear Ulrich Voigt, I, too, am grateful that you shared this with the rest of us. Hope to get some time this weekend to read through the manuscript carefully. ...
Dear Al Stanger, thank you for the information; I have already corrected the text. One reason for me to post that text for free download is that I am hoping...
Seen from the points of interests in mental maths, the topic may be an ugly one. However, my feeling when I try to play the classic solitaire game mahjongg*...
What you think? According to the memoriad program no more than 75 dates could be calculated in one minute and if you arrive and the time has not finished ...
Freddy
freddy03032@...
Jul 27, 2009 1:57 pm
3081
Hi Freddy, even though records of more than 50 dates per minute (Romero and Koningsveld I think) were made in official events, I consider a record of 60+ to be...
Seen from the points of interests in mental maths, the topic may be an ugly one. However, my feeling when I try to play the classic solitaire game mahjongg* ...
Hello, As an engineering student, I'd like to increase my general handiness with numbers. After a few months of casting about for a good solution, I stumbled...
Hi, I saw that a man from France did the the 13 square root of a 200 digit number in one minute, anyone know which is his method exactly? Thanks, Ramon. ...
Hi, The only person I know who even approaches those speeds is Alexis Lemaire. Here is a website that can help you attempt the 100 digit counterpart: ...
Hi Ramon. I think the chap you are talking about here is Alexis Lemaire. He rarely discusses the details of his latest projects, but previous versions of...
Hi folks! It's that time of year again. The Mind Sports Olympiad is upon us in just a few weeks, and the Mental Calculations World Championship is to be...
"Mind-Sport": Some of you saw me with the pi-permutation over 100 digits in 48s.43 (Gießen 2006). This year I made the same in 44s.25 (Hamburg July 31) U.V....
I'll be there! Andy ________________________________ From: George Lane <george972453@...> To: Mental Calculations <mentalcalculation@yahoogroups.com> ...
What do you mean by pi-permutation ? ... Fra: mnempi <voigt@...> Emne: [Mental Calculation] pi-permutation Til: MentalCalculation@yahoogroups.com Dato:...
The pi-permutation over 100 digits is a mind sport which presupposes that you know the first 100 digits of Pi (following pi = 3.) pretty well and can answer...
Hi all, Any of you have an idea of the possible exercises that could appear at the MSO? I ask because maybe some of you have the exercises of the previous ...
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