Archives for posts with tag: maths

According to a study, countries where people eat more chocolate produce more Nobel Prize winners – so it seems that chocolate makes you clever.  There could be a connection (see these theories) or it could just be a coincidence – there’s a correlation between serial and rampage killers and chocolate consumption too. It’s important to remember that correlation and causation aren’t necessarily the same thing.

The original article was published in the New England Journal of Medicine.

I know it’s a bit late, but 22 July (22/7) was Pi Approximation Day. The fraction 22/7 is an approximation of pi, the mathematical constant that describes the ratio of a circle’s circumference to its diameter. Pi has an infinite number of non-repeating digits after the decimal point – see this site for the first million digits (or not…) Pi Day is 14 March (3.14), of course!

Pi Day is on 14 March  (3.14). Pi has an infinite number of digits but has been calculated to 206,158,430,000 digits.

If you tie 13 knots, all the same distance apart, in a piece of string, and make a triangle with knots at the corners and three gaps between knots on one side, four on the next and five on the third, you will have a right-angled triangle.

This works because of Pythagoras’ theorem – the square on the hypotenuse (the sloping side) is equal to the sum of the squares on the other two sides.