CAN U....?

1..if six men can pack six packets of candy in six minutes,how many men are required to pack sixty packets of candy in sixty minutes..??

2..what is the biggest number that can be expressed in threefigures..??

3..153=1^3+5^3+3^3..can u find some other three digit numbers like this..??

4..multiply 21978 by 4..now findout whats the relation between the original number[21978] and the multiplied number..??

5..what curve has been called the "hellen of geometers"..??