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honus
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Quote:
On 2004-11-19 04:23, k wrote:
MMM I would have to say the most magical numbers would HAVE to be
Pi (3,14...) as it's a perfect number!


In what sense is pi a perfect number? Perfect numbers
( http://home1.pacific.net.sg/~novelway/MEW2/lesson1.html ) are those that equal the sum of their positive factors.

Agreed that pi is a quite interesting number, though. Not, perhaps, as interesting as e or phi, but quite interesting nonetheless.

As to the original post - gotta be zero. <Comic Book Guy voice> Coolest . . . number . . . ever.

Patrick
fredrux
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When I was about 13 I did this on a mathematic lesson, quite fun... I got it from Harry Lorayne´s Magic Book

Quote:
On 2004-06-10 14:23, Scott Cram wrote:
Quote:
On 2004-05-20 22:26, xanatos wrote:
I realize this also doesn't quite fit the parameter, but it's between 0 & 9...

The golden ratio. 1.618033...

The fibbonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233...

I *KNOW* there's gotta be an astounding magic effect that can be presented with these, I just haven't seen it, or figured one out yet...

Anyone got anything on this?

Dave



I'm surprised that no one yet has brought up the most classic of Fibonacci effects. The following is a "lightning calculator" stunt.

You ask your audience member to write down any two small (preferably one-digit) numbers, one below the other. For example, let's say they write down 8 and 3:

8
3

You then ask them to add these two numbers together to get a third number, and write that below the other two. In our example, that would be:

8
3
11

You then ask him to add the lowermost two numbers to get a fourth number, as in our example:

8
3
11
14

The adding together of the two lowermost number is continually repeated, until there are ten terms listed on the page. In our example, the final list would look like this:

8
3
11
14
25
39
64
103
167
270

You now ask your audience member to add up all these terms on a calculator, while you attempt to add up all these numbers in your head faster than he can on the calculator.

In this example, as he starts punching in "8 + 3 + 11 ..." you say, "704"! When your audience member finishes totaling the column, they find out you are correct!

This one is simple. You simply look at the seventh number on the list (the one that's fourth from the bottom), and multiply it by 11. That will be the total for all of the numbers!

To show you why, let's do the same routine, but just with numbers X and Y. The list of 10 numbers would then look like this:

X
Y
X+Y
X+2Y
2X+3Y
3X+5Y
5X+8Y
8X+13Y
13X+21Y
21X+34Y

The total of all these numbers is:

55X+88Y

Notice that the seventh term down (fourth up from the bottom) is 5X+8Y? That's why all you have to do is multiply by 11. 55X+88Y is the same as 11*(5X+8Y).
Scott Cram
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Quote:
On 2005-04-05 15:25, honus wrote:
Quote:
On 2004-11-19 04:23, k wrote:
MMM I would have to say the most magical numbers would HAVE to be
Pi (3,14...) as it's a perfect number!


In what sense is pi a perfect number? Perfect numbers
( http://home1.pacific.net.sg/~novelway/MEW2/lesson1.html ) are those that equal the sum of their positive factors.



Yes, but let's imagine Pi is a perfect number. We'd know two things we didn't know before:

1) Pi would finally have an end

2) The last digit of Pi would either be 6 or 8

Smile
owen.daniel
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Landmark suggested the Speed System book a long time ago, I eventually managed to locate a copy (having seached I found it right under my nose at my school library)!
I really advise this as an excellent book! Although not really that magically relevant, if you want to develop your arithmatic skills this is a really excellent system. I cannot claim to have practiced and honed all of the principles, but if you work on it, and spend time, this could be very rewarding. I just enjoyed it as I was interested in trying to work out why this stuff works!
Excellent,
Owen
mentalvic
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There are really TWO most magical numbers, these being: 365 and 366.

365 is the number of days per normal year while 366 is the number of days in a leap year.

I believe it was Cassidy who pointed out that the sum of the integers from 1 to 13 (ace to king) is 81. 81 times 4 (being the number of suits) is 364. 364 plus one joker gives 365. 364 plus two jokers gives 366.

There are 52 cards to a deck (sans jokers) and 52 weeks per year.

There are 13 cards per suit and there are 13 lunar cycles per year.

There are 4 suits per deck and there are 4 seasons per year.

The number 365 can be derived by taking the gematric value of the Greek name of the Gnostic deity ABRAXAS or ABRASAX.

But, to quote Crowley, "Every number is infinite; there is no difference." Smile
There she was, a dodgy old prune in a tiara, rushing at me waving a sword. Do all knights suffer this whilst being made?
Jonathan Townsend
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I suggest one. Before one there was nothing.
...to all the coins I've dropped here
Vandy Grift
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Three is a magic number,
Yes it is, it's a magic number.
Somewhere in the ancient, mystic trinity
You get three as a magic number.

The past and the present and the future.
Faith and Hope and Charity,
The heart and the brain and the body
Give you three as a magic number.

It takes three legs to make a tri-pod
Or to make a table stand.
It takes three wheels to make a ve-hicle
Called a tricycle.

Every triangle has three corners,
Every triangle has three sides,
No more, no less.
You don't have to guess.
When it's three you can see
It's a magic number.

A man and a woman had a little baby,
Yes, they did.
They had three in the family,
And that's a magic number.

3-6-9, 12-15-18, 21-24-27, 30.
3-6-9, 12-15-18, 21-24-27, 30.
Multiply backwards from three times ten:

Three time ten is (30), three times nine is (27),
Three times eight is (24), three times seven is (21),
Three times six is (18), three times five is (15),
Three times four is twelve,
And three times three is nine, and three times two is six,
And three times one is three of course.

Now take the pattern once more:
Three! . . .3-6-9
Twelve! . . .12-15-18
Twenty-one!. . .21-24-27. . .30

Now multiply from 10 backwards:
Three time ten is (30 - Keep going), three times nine is (27),
Three times eight is (24), three times seven is (21),
Three times six is (18), three times five is (15),
Three times four is twelve,
And three times three is nine, and three times two is six,
And three times one...
What is it?!
Three!
Yeah, That's a magic number.

A man and a woman had a little baby.
Yes, they did.
They had three in the family.
That's a magic number.



Schoolhouse Rock Baby!!!!

Vandy
"Get a life dude." -some guy in a magic forum
Phil Thomas
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Is 69 a magic number?
"If we lose the sense of the mysterious, life is no more than a snuffed out candle."

Albert Einstein
Watchmaker
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Math geeks, you gotta love 'em!

Since the set is so small to choose from I'm going with 3. Has to be prime to be interesting.

Trinity, Good things come in three's, famous people die in threes, good things happen in threes. If you're Canadian you probably love Hat Tricks. Octopussess' (or is it octopi?) have 3 hearts. Hayseeds love 3 (I think it has something to do with racing cars). Babe Ruth wore number 3, we live on the third planet from the Sun and in Texas it is illegal to take more than three sips of beer while standing.

'All things thrive but thrice' -Scottish Proverb

If that wasn't good enough

3!+3=3^2

3 is the only prime whose factorial is a perfect number.

3^3=3^2+3^2+3^2

All sufficiently large odd numbers are the sum of at the most 3 prime numbers.

Last but not least, THE THREE STOOGES!

By the way, Zero is not a number.
Magiman
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42!

oh, Douglas Adams would be proud.
-Magiman
owen.daniel
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There are a few Fibionacci effects that appear in Martin Gardner's Martin Gardner Presents. They also appear in The James File.
Owen
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