World of Numbers

I didn’t do all that well at school, but I did love
maths. When I left school, I found that I still wanted
to know more, and maths became my lifelong hobby.
I love maths and all things mathematical.
Everything we do depends on maths. We need to
count things, measure things, calculate and predict
things, describe things, design things, and solve all
sorts of problems – and all these
things are best done with maths.
There are many different branches of maths,
including some you may never have heard of. So
we’ve tried to include examples and illustrations,
puzzles and tricks from almost every different kind of
maths. Or at least from the ones we know about –
someone may have invented a completely new kind
while I was
writing this introduction.

Download:

http://www.filesonic.com/file/325913901/Ball,_Johnny_-_Think_Of_A_Number_-_A_Fascinating_Look_at_the_World_of_Numbers.pdf