Fancy Carol is the name of Japan's one man ride eco car. It participate in an eco marathon contest in Hiroshima and set a new record for milege in 2003, 3962 km per litre !.

One with 21 zeros is called Sextillion, One with 30 zeros is called Nonillion.

In Roman numeral I is 1, V is 5, X is 10, L is 50, C is 100, D is 500 and M is 1000. It uses only 7 symbols.

A three sided polygon is called a triangle, a nine sided polygon is called a Nonagon, an elevan sided polygon is called a Undecagon and a 12 sided polygon is called a dodecagon.