Misc: In what year did Einstein write to Roosevelt?

Questions

The three number systems commonly used in computers are binary, decimal and _________.?

The transcendental number 'e' was named after what mathematician?

The two rival gangs in "west side story" were the sharks and the _________?

The u.s has never lost a war where they used ______?

The universe what steve martin film had him go from rags to riches to rags?