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marcos

02/20/03 1:01 AM

#21323 RE: Mattu #21322

Solve it? ... gives me nothing but a blank page, white on white ... looks like it's dissolved itself maybe -g- .... at first you scared me with the 'math tricks' there, but this is a piece of cake so far - http://www.cyberglass.co.uk/assets/Flash/psychic.swf

... there are some pages netscape 4.7 won't bring up ... not the first time i've experienced this ... or more correctly, failed to experience -g-

[edit] - lack of a search function is another thing wrong with stockhouse.ca ... forgot this while typing the other, but on some threads there is good stuff way back there, and you can't find it ..... without poster-specific and thread-specific search that works, you've got nothing but ephemera, idle chat


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0nceinalifetime

02/20/03 2:36 AM

#21325 RE: Mattu #21322

There's no real "trick" involved, just simple math. When you take a two digit number, add the digits together and subtract the sum from the original number there are only so many answers. Specifically, 9, 18, 27. 36, 45, 51, 54, 63, 72, 75, and 81. As long as the "mystic" makes sure all those numbers have the same symbol next to them it is easy to guess what the mystic symbol is.

Once

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MaryinRed

02/20/03 6:53 AM

#21332 RE: Mattu #21322

Do it a few times....the numbers are multiples of 9.
Each time you guess, the numbers that are multiples of 9 change.

But they are the same.

note.....that same symbol is repeated across all the multiples of 9.

you don't notice this...and when you do it each time, the symbols that are multiples of 9 all change.'

look at those....make a note of the symbol
hit play again...they all change.

life is less of a mystery....than often appears.

smile....Mary

BTW if you every want to teach a child his/her X9 tables...use your fingers. Put your hands out and lower the left pinkie.
that is left is 9 fingers to the right. 9 x 1 = 9
now raise that finger and lower the next one to the right. You will have the left pinkie up that is 1. To the right of that lowered finger ...you have 8 fingers. so when you lower that 2nd finger 9 x 2 = 1 8. the 1 to the left and the 8 to the right. keeping lowering the fingers one by one. and counting the fingers to the left and the right.

Many a child has been calmed by this little exercise.
Frankly, the multiplication tables are easy if you think of it this way. Kids really only need to learn these:
4 x 6
4 x 7
4 x 8
7 x 8
6 x 6
6 x 7
6 x 8

why is this?
Well...everyone knows their zeros
and their ones
and their twos
and most know their threes
and their fives
and their tens
so they need to learn their 4's but they already know
4 x 0 1 2 3 5 and now 9
and they need to learn their 6's but assuming they learned their 4's.... they know their 0 1 2 3 4 5 9

etc.
So...drill them on the ones above...and let them practice with the rest....but the chore is much less arduous than it originally appears.

smile..Mary



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WillP

02/20/03 10:01 AM

#21341 RE: Mattu #21322

No problem:

Given a two-digit number, xy ....

It actually is 10x + y (If xy stands for 59 then its 10(5)+9 = 59.)

So, 10x + y - (x + y) = 10x + y - x - y = 9x

So, any two-digit number less the sum of the digits is equal to nine times the digit in the 10s place. For instance, using 45, four is in the 10s place, so the result is 36. Confirm by 45 - 9 = 36.

The same symbol appears for all numbers divisible by nine, which are the only ones that can possibly appear, since the multiple of nine is involved in the equation.

Regards,

Will