I get an idea for MENTAL CALCULATORS, I think will be very good to have a web site for mental calculators where there run some programs and calculators compete...
3012
George Lane
george972453
Apr 4, 2009 9:41 am
Hi All, I think this would be a great move. We have a file section available within the group, can we add such programs too? If not, could we set up such a...
3013
Michael Curtis
mick_curtis
Apr 4, 2009 10:59 am
I believe that I could make a site like this (and a lot of you mathematics guys could as well, I have no doubt). I would want to keep it proprietary: not open...
3014
Prabhu Sutar
prabhusutar...
Apr 4, 2009 11:52 am
Is any website presently there for Mental calculators ?????????? Regards Prabhu ... From: Freddy <freddy03032@...> Subject: [Mental...
3015
A.W.A.P. Bouman
awapbouman
Apr 4, 2009 6:29 pm
Good afternoon all, When the only goal for the website is finding out who is the fastest calculator, my reaction is short and clear: no thank you very much. My...
3016
George Lane
george972453
Apr 4, 2009 6:30 pm
Hi there. Some of the factorisation problems are randomly generated, others are deliberately designed. The ones I set myself for practice are randomly...
3017
werbeka
Apr 4, 2009 7:27 pm
Well, Willem, het spijt mij, but I don't agree. Most championships have to do with being quickest, longest, strongest, or whatever. Of course nobody should...
3018
Michael Curtis
mick_curtis
Apr 4, 2009 8:31 pm
Respectfully, Willem, let's not split the thread. This thread is about designing and implementing a mental calculation competition site. It would be productive...
3019
A.W.A.P. Bouman
awapbouman
Apr 6, 2009 8:36 am
Good morning Bernhard, He, that's funny, I recognise "meine Muttersprache, sehr schön´. Indeed, and I realise, all kinds of sports have a quantitative...
3020
werbeka
Apr 6, 2009 8:39 am
@ mike: well, the descriptions are only in German and Swedish, but of course one can do the calculating in any language... :-) The links on the upper part are...
3021
Michael Curtis
mick_curtis
Apr 7, 2009 2:42 pm
Thank you for that. I got excited about trainings lager but there was no free beer. For my part, I am looking at sites which have online tests and thinking...
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Mick Curtis
mick_curtis
Apr 8, 2009 8:32 pm
I am wondering how the Pegasus file should be used as a model for making random tests. Is it that the number of digits before a decimal place and after a...
3023
George Lane
george972453
Apr 9, 2009 10:04 am
Hi Mike, The set-up I've put together within 'Pegasus' is designed to be adaptable - take the bits you need & junk the rest. Decimal additions (as you have...
3024
A.W.A.P. Bouman
awapbouman
Apr 22, 2009 11:13 am
Dear calculator friends, It is always agreeable to see his opinion confirmed. I discussed the matter more times with Gert Mittring, who is a doctor in...
3025
Michael Curtis
mick_curtis
Apr 23, 2009 8:06 am
I was reading about a mathematician named Xi, I think, who apparently made the formula which the stock markets used to calculate risk. Some might call the use...
3026
A.W.A.P. Bouman
awapbouman
May 15, 2009 10:42 am
Dear Calculators, For the 8 May weekend I organised a MC weekend. My esteemed guests were Dr.Dr. Gert Mittring, Jan van Koningsveld and Dr. Andrew Robertshaw,...
3027
gururaj manchali
gmanchali
May 30, 2009 9:29 am
Respected Mr Bouman I did not understand what is this chinese remainder theorm but I am very much interested to learn the same. Can you give 1 or 2 simple...
3028
ralf_laue
May 30, 2009 6:09 pm
... Before asking other people for help, I would recommend to do your homework: Option 1: Lookup "Chinese Remainder Theorem" at Wikipedia Option 2: Search for...
3029
Mick Curtis
mick_curtis
May 31, 2009 9:59 am
Hello everyone, You may remember a thread where Freddy said that an online mental math competition might be a good idea. At the time, I was looking for a web...
3030
A.W.A.P. Bouman
awapbouman
Jun 2, 2009 1:23 pm
Dear Calculator friends, After my friends Andy, Gert and Jan went home, I found this "explanation" of the chinese remainder theorem, which to me is indeed...
3031
Andy Robertshaw
robertshaw_andy
Jun 2, 2009 8:04 pm
Hi Willem! Ok, Simulateous congruencies are something you do know - a "congruence" is a modulo. So if I ask what is the remainder when 67 is divded by 12, I...
3032
A.W.A.P. Bouman
awapbouman
Jun 3, 2009 9:20 am
Hi Andy, Your reaction is printed and will be studied. I do not know where the CRT is used for, anyhow in the case of the remainder division it was crystal...
3033
A.W.A.P. Bouman
awapbouman
Jun 8, 2009 6:47 pm
Dear Mr. Manchali, As I am not very sure if my message enters in your mailbox I make a cpy for Mental Calculation. Of course I am minterested if my anwer meets...
3034
George Lane
george972453
Jun 9, 2009 10:14 am
Hi folks, It's been a while since I posted anything to the group, so I thought I'd out something down on this subject. Willem's '11 test' is very much akin...
3035
jsh.flynn
Jun 10, 2009 8:30 am
Hello fellow calculators, Would anyone be kind enough to in detail (step by step) show how to calculate the square root of this mentally as my algorithm...
3036
A.W.A.P. Bouman
awapbouman
Jun 10, 2009 6:06 pm
Dear Josh, Of course you get help! Ok sqrt 100044. a.. the nearest square under your number is 316²= 99856. b.. Subtract this of 100044= 188 c.. 188/2=94÷ =...
3037
jsh.flynn
Jun 10, 2009 9:30 pm
Dear Willem Bouman, This is the most important response I have ever recieved for I finally understand the method and the logic behind it. I am hooked and have...
3038
Michael Curtis
mick_curtis
Jun 11, 2009 8:52 am
Hello everyone, re: 188/2=94÷ = 2 r 32, as we later on make further subtractions 3r1 would bring us in trouble Is there a 'for dummies' version of this...
3039
George Lane
george972453
Jun 11, 2009 11:45 am
Hi Josh, Willem, and... well, everyone really. The number 100,044 gives quite a good example of a technique I sometimes use to find square roots. Willem's...
