1001 Arabian Nights
Hi Mary, are you familiar with Bucky Fullers Scherhazade reviewing of 1001 Aarbian Nights story in his book Synergetics 1?
7 * 11 * 13 = 1001. He has quite a story-line to go with it. I can't post links to it yet.
There is operation with calculator to fool your friends. Have them pick a 3 digit number ex 538 and repeat it to make it a six digit number ex. 538538.
While doing this put your hand to your forehead and pretend your accessing the beyond to figure out their number.
Next ask them to divide there number by either 7, 11 or 13 but don't let on you know these numbers ahead of time. So do this with each of those three prime numbers 7, 11 and 13 iin any sequence.
After they have divided with all three of those primes there original three numbers there original 3 digit number has returned.
Here is quote for a page...."Good Luck or Bad Luck? 1.Have someone secretly select a three-digit number and enter it twice into her calculator. (For example: 123123) Have her concentrate on the display. You will try to discern her thoughts!
2.From across the room (or over the phone), announce that the number is divisible by 11. Have her verify it by dividing by 11.
3.Announce that the result is also divisible by 13. Have her verify it.
4.Have him divide by his original three-digit number.
5.Announce that the final answer is 7.
You can use this to predict Good Luck for him. If you wish to predict Bad Luck, have him divide by 7 in step 3; the final answer will be 13.
Why does this work? Entering a three-digit number twice (123123) is equivalent to multiplying it by 1001. (123 x 1001 = 123,123). Since 1001 = 7 x 11 x 13, the six-digit number will be divisible by 7, 11, 13, and the original three-digit number.'
r6