Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.



Re: the surfer's value of pi (wokrking on proof
Posted:
Oct 1, 2013 8:42 AM


On 09/30/2013 11:30 PM, Space998@hotmail.com wrote: > incidentally, I just learned that (baseten) > "casting out nines" is really a property of three,
You might want to reread. The general case is that, in base "n", casting out "n1" works. This is true, not just in base 10, where 9 is the square of a prime, but in all bases. For instance, in octal, one casts out 7s.
 Michael F. Stemper If you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does.



