## Find a way to my Heart: The 1-in-10 Gay Problem Continued…

August 4th, 2009 1 comment

This post builds on the ideas from the first 1-in-10 Gay Problem post and takes a step into the creative world of abstract maths.

## The 1-in-10 Gay problem!

…a maths problem that is.

“If 1-in-10 people are gay, and there are 10 people in a room, one of the people in the room must be gay!”

Is this true?  Take a look here for the full analysis!

## The Shrinking Square

February 19th, 2010 1 comment

### Problem: When the area of the green square is two-fifths of the area of the whole diagram, what fraction do the four black triangles occupy?

Open the post to play with a Java applet.

## Mathart

November 29th, 2010 1 comment

## Ballcam

March 9th, 2011 1 comment

Please forgive my appalling lack of posts in recent months.  I’ve been working on a project with the above name, which seeks to place cameras in objects that can rotate on any axis, a football for example!  Exciting stuff, but I can’t share the maths with you on here.

## VAT increased to 20% – is it worth panic buying?

June 24th, 2010 1 comment

# Problem

A TV is advertised at £1000 including VAT at 17.5%.

VAT is increased to 20%.  What will the new price tag be?

# Solution

The immediately apparent answer is £1025, because we’ve “added 2.5%”.  But that’s not quite right…

## Problem:

We wish to make two folds in a rectangular piece of paper to form a trapezium (or trapezoid for the chaps across the water).  Read more…

## Folding a Trapezium (Problem only)

### A Geometric Secret of A4 Paper

I’m not just going to give the answer away this time!  At least not for a while anyway… (Click here for the solution) Read more…