Ever wanted to find an application to solve a problem for you and could not be bothered trawling through the ver confusing iTunes or Android Marketplace. MimVi is a purpose built application search engine designed to help you find the right tool for the Job. It has Apple, Android, Blackberry and Web Apps and is a great little tool to remember. See it here.
I heard this on the radio tonight and thought what a great maths activity for my kids tomorrow. Give it some thought and then click this link for the answer. Seems ridiculously easy once you see it done.