Math Forum / Mathematics / Recreational Math / April 2008

Here's an interesting one:
A lifeguard stationed on a beach with a straight shoreline sees a
swimmer in trouble 150 meters down the beach and 60 meters out in the
water.

Hello computer algebra Buff the Earthling,
You've spotted that we keep preparing for the Ultimate Battle...
Now you?  Ready to fight for our C12-based Human Civilization?
(If not, think again, and get ready!)

At *exactly* what times do the hands on an analogue clock intersect?
Jonathan

hello sir:
            i am marimuthu this is my questions please reply me i
dont know how to calculate that problem.
       the life of given type of wheel for a specified operating

If you add up the numbers ein each position after they have been
sorted in ascending order you will find after the last 112 draws that
the means are 9.6, 18.7, 27.4, 37.1 and 46.6 and tere appears to be a
slow decrease in each mean from earlier draws.

1.  Using a random process, place a point on a line segment.
 Call it x.
2.  Using a random process, place a second point on the line.
 Call it y.

A friend pointed out to me that if you wrote 2 +2 = on the Google cross bar
it would return 4.  I purchased
  The Ultimate Google Resource
     by Michael Miller

Does anybody know of a progrm that will count the frequencies of each
digit, 0-9, in seven sets of Pick 3 games and will list them ?
Does Excel have a tool to do it?
I would like to be able to do this on a daily basis for the past 100

A quick note for our collective studies, based on the Lie group which I
learned after on Wikipedia, perhaps a chance that its compendium could be
facuated in order to transfer the congress and senate of the USA into
primary executive orders for inter-linked communications and get ...

Hello dear computer algebra Fan the Earthling,
My carbon-based brother and sisters, wake up!  Waaaatch out,
those formidable (striped!) Computers are already stretching
their silicon hands over our the planet, the cradle of the

Phillipe.
In the case of a point P in a square you give a numerical example of k for a,b,c,d. What is the general formuls for k = a,b.c ?
Thanks
Bill

I want research about generalized cantor set with the numbers if
anyone know any thing please help me.

Is it always possible to remove N squares from an NxN chessboard in such a
way that the remaining squares can be covered by N*(N-1)/2 dominoes in a
unique way?
For example, for N=8, there is only one way of covering the following board,

The finished diagram is a square with a cross inside reaching the corners.
On each outer side of the square is a semicircle facing the square edge.
I have to draw it without taking the pen off the paper, without retracing, and without using a point outside of the box.
Our meditation ...

What formula should I use to calculate how many digits are likely to
be missing after N draws?
Will the formula 10x0.9^3N be correct or is there another one?
Based on this formula there would be 0.424 digits missing after 10