I managed to get all four, but now I'm worried that all this proves is that I'm as intelligent as an 11 year old.
Hated maths at school with a passion, and I now overly rely on the calculator I have on my iPod.
Maybe that's a factor? Fifty years ago you HAD to have a fairly good grasp of maths to get on - now you are surrounded by electronic devices to assist you.
Also - one last think...perhaps the part of the brain which we use to calculate figures is like a muscle - if you don't use it, it gets flabby.
I can add up the price of a small basket of groceries, or a new suit, shirt and tie, or a round of drinks in my head, but to this day, I don't know what a hypotenuse is.
I imagine it's like a hippo...only smaller.