Today's   Maths facts

The numbers on opposite sides of a dice always add up to seven

 On a dice the numbers 1,2 and 3 all share a vertex.  If these three numbers run clockwise round this vertex then the dice is called left-handed and if the three numbers run anti-clockwise round the vertex, then it is a right-handed dice.   Chinese dice are normally left-handed and Western dice are normally right-handed.

 Sergey Brin, co-founder of Google studied maths (and computer science) at university

Lots of tech entrepreneurs used maths to make their billions and Sergey Brin is no exception.