The book is entitled: "Penguin Dictionary of Curious and Interesting Numbers" The author is David Wells. This is indeed an interesting book. I am also sure...
NIXON, Grant (Kanata)
GNIXON@...
May 2, 2005 1:21 pm
1786
Hello? I have a Question concerning fast division of numbers. For example the number 1,001 or 1,0001? When you have a long number f.i. 123,456,234,345,456 you...
Fleissdr@...
May 3, 2005 7:19 am
1787
Golden Number linked to 666 Formal Proof needed Hello, While working on my websites on 666 myth ( http://www.666myth.co.nr/ French= http://www.666mythe.co.nr/...
Thank you to everyone who gave me help on this. Mike ;) ... http://us.click.yahoo.com/TzSHvD/SOnJAA/79vVAA/wHYolB/TM ... Send instant messages to your online...
Hi Harsha Personally, I would advise an initial education in the basics of maths (if necessary) and then a gradual change-over to working without writing down...
Hi Gert, George here. There is an interesting factor to consider when dealing with the number 1001; it's one I use in the prime factorisation problems. it is...
Hi George, thank you very much! I think, that it takes more time to divide by 7 (than 11, than 13) instead of 1,001 (substraction technique). Do you know a...
Fleissdr@...
May 12, 2005 7:25 am
1793
Gert Is that division related to the root extration ? Emmanuël ... http://us.click.yahoo.com/EA3HyD/3MnJAA/79vVAA/wHYolB/TM ... ...
Hello again Gert. I agree; dividing by smaller numbers will logically take more time than dividing by larger ones - unless, of course, the larger number is so...
hello everyone, I've tried both systems or rather have "skimmed", both seem pretty cumbersome and surely require mental conditioning. Well efficacy = technique...
I am a street performer under nickname "The Human-Computer" who specializes in "Mental Math." By calculating equations in my head very quickly, I am able to...
Hi Mr. Human Computer... I would like to know more about that trick of yours... can you share your secret with us? Thanks in advance, Carlos Miguel Praxedes ...
I can explain how it can be done (no evidence that " mister Human Computer does like this) first memorize carefully the following codes for the month and days ...
Hi Oleg: Congratulations by your ability. Matthias will be very happy with you:)) What another mental calculations you are able in your "street" performers ? ...
Hi Oleg Your ability to calculate days for dates is indeed impressive. I was, unfortunately, unable to attend the Mental Calculations World Cup in Germany last...
dear friend, thank you for your help but... haven't you forgot what's the number for November? Thanks in advance, Carlos Miguel Praxedes ... -- Um abraço, ...
0 = January and October 1 = May 2 = August 3 = February and March and october 4 = June 5 = September and December 6 = April and July the serie is 0 3 3 6 1 4...
I'm sorry to be a nitpicker but 13 mod 4 is not 3. Also, you have repeated october instead of placing november in the list for 3 = I've seen a method similar...
I badly expressed myself ... Actually I meant 13 /4 = 3 (plus 1) to have the numbers of days in the leap years The codes for the monts are JFM AMJ JAS OND 033...
Hi All, This is an interesting problem! Just give a thought. Find the smallest whole number N such that if we divide it by 7, 9 and 11 leaves remainder 1, 2...
Hi, you can also use other methods: http://rudy.ca/doomsday.html I think, that this one is easier to remember. - Jens...
Jens Gutzeit
620@...
May 20, 2005 8:31 am
1813
That one seems a lot more fiddly and complicated to me. I think it just depends on your mindset. The way I do it is more attuned to memorising lists of...
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