>
>
> > then point out that you can feed the number in from either end (most or
> least
> > significant end first) - and proves that it will work either way! The
> > committee was blown away.
>
> Doesn't everyone know that a number is divisible by 3 if the one digit
> result after casting out 9s is divisible by 3?


Sure. But the amazing point was it worked regardless of bit order.