This methond is amazing. It gave my impression that this method is based on Abacus but now it seems it's based on fingers? Albert Xu ... -- Albert Xu skype:...
Yes, this method is based on Shi FengShou fingering method, which is one of the methods invented by Professor Shi Fengshou, a great mental mathematician in...
Hello, where can I find information on Shi Fenshou's method? It seems to be really great! Best wishes, Peter Hintz ... is one of the methods invented by...
Try this http://shifengshou.com/index.htm and click on the 'English'. If you can read mandarin, there are:- http://tag.blog.sohu.com/%CA%B7%B7%E1%CA%D5/ ...
wow, that is great even multiplying by 2. But the informations are incomplete. Could you plz give all "the 26 carrying rules" in english? I am inspired to...
It is not possible to calculate mentally the Julian (or Gregorian) date of the beginning of the Hebrew year ( Tishri 1 = rosh hashanna). But it is possible to...
I am I. E. Divasli, residing in Mumbai, India. I am happy that there are quite a good number of Indian participants to take part in MCWC 2008. It will be worth...
Dear Calculator friends, What is the special reason that the 13th root - of an huge number- seems to be the magic standard? Does one of you have an idea? Eg I...
Hi Willem, I think one reason for this is because prime roots are more difficult than composite roots. For example if we have the 15th root then we can take...
The nth root challenge requires n to be prime because the fourth root for example could involve taking the square root twice and so may be less challenging...
It was 23 and 73 too... http://stepanov.lk.net/mnemo/smith13e.html AWAPB> Dear Calculator friends, AWAPB> What is the special reason that the 13th root - of an...
Oleg Stepanov
olegstepanov@...
Jun 15, 2008 12:58 pm
2691
Dear Mr. Stepanov, Thank you very much for your interesting article, which I printed immediately. I'll tell you something very interesting. When I met Wim...
Ha, Andy, Thank you for your reaction. you are right when you speak about the number of digits of the answer. If I remember wll it was Wim Klein who said: "The...
Dear Mr. Flynn, With all respect: I do not agree with you. An integer cubic root is far less challenging: when you work on the right way in combination with...
AWAPB> Dear Mr. Stepanov, AWAPB> Thank you very much for your interesting article, which I printed immediately. This is not article. This is chapter from book....
Oleg Stepanov
olegstepanov@...
Jun 15, 2008 7:27 pm
2695
I see, so Divasli is giving a private tuition to the Indian participants for this year MCWC on calendar event!  Hmmm… in order for the rest of the...
Dear Mr. Stepanov, Thanks again for your interesting reaction and the link it contents. My problem: it is more than 50 years ago that I left the secundary...
Dear Mr. Bouman. I do not know is it interesting. But here one more chapter from that book: http://stepanov.lk.net/mnemo/sm16.html AWAPB> Dear Mr. Stepanov, ...
Oleg Stepanov
olegstepanov@...
Jun 16, 2008 8:22 am
2698
Dear Mr. Stepanov, Thanks again. Willem Bouman ... Van: Oleg Stepanov Aan: A.W.A.P. Bouman Verzonden: maandag 16 juni 2008 10:20 Onderwerp: Re: [Mental...
Dear mathletes, The Mental Calculation World Cup 2008 is approaching quickly. Here are some news for the participants. *** Accomodation *** All participants...
Dear mathalthletes, I had notice a great issue regarding 8 digit, my point of view it had been agreed 8 digit x 8 digit mulltiplication even you can...
Dear frank chin in your page below www.fongkee.t35.com i think there is an error 1676 february 23 is not a wenesday? best regards ... From: Frank Chin...
23 February 1676 was a Wednesday if we bear in mind that the calendar was Julian (pre-Gregorian). Â Â Â 14 September 1752 was a Thursday in UK, and the day...
23rd feb 1676 is Monday and not Wednesday. ... From Chandigarh to Chennai - find friends all over India. Go to http://in.promos.yahoo.com/groups/citygroups/...
Hallo Andy, As calendar calculation is not my best capacity, I calculated: 23-1+4+19+6+6=57 = Sunday. So: already 1 foult less. Till next week! Willem Bouman ...
Here is the algorithm which Carl Friedrich Gauss used for computing the day of the week for any Julian date: Number the days like W (Su) = 1, W (Mo) = 2 etc. ...
As explained by Andy Robertshaw, if based on Julian Calendar, 23/02/1676 is Wednesday, but if based on Geogerian, 23/02/1676 is Sunday. However, Willem Bouman...
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