The idiot who said that 2009 should be pronounced twenty AND nine is no mathematician. The word AND denotes a decimal, for example five AND two-tenths (5.2).
I don't really care how people pronounce 2010. Twenty ten would be the social norm, and two thousand ten could be used on more formal occasions.
I don't really care how people pronounce 2010. Twenty ten would be the social norm, and two thousand ten could be used on more formal occasions.