Tuesday, October 02, 2007

Back by Popular Demand !

Welcome back my friends to the show that never ends ! Step inside ! Step inside ! ............. Yes, well. Since my last blog, that broke a fast of several months, I've been castigated for leaving it so long between blogs. Ok ! Ok ! I didn't actually realise that anyone out there read this stuff ([grin]) !

So, I've decided to make a to-do list (I can hear the cynical sniggering already ) of topics to cover soon:
  • Internet Music
  • Agile and Extreme Programming
  • A Second Riiview (see here on April 14, 2007)
  • TBA
  • I'll try not to wait 3 months between episodes! I would guess that some people will have no interest in programming, so I'll add light entertainment too !

    Today I'm sitting in the bat-cave programming, so taking a moment off to write this. The AG just sent me this site - you should introduce you 7+-year-old to some of these tricks
    . However, there are some others:
    • Is it Prime? For starters, not if it ends in an even number, 5, or 0 (that means divisible by 2 or 5). To check further, add all the digits, and keep adding until you have just 1 left. If that is 3, 6, or 9 then it's divisible by 3 and definitely not prime.
    • The site gives an easier way of subtracting from 1000 (or similar). I find easier to take 1 from 1000 leaving 999. Then I don't have to carry at all. Afterwards I can just add the one back to the result !
    Bye !

    2 comments:

    Anonymous said...

    missed you

    AG

    Sarah said...

    Loved the site! I knew some of those tricks but had, naturally, forgotten them.