Which Characters May Be Used As The Second Character Of An Identifier

1.	Which Characters May Be Used As The Second Character Of An Identifier,but Not As The First Character Of An Identifier?
Answer» The DIGITS 0 through 9 MAY not be used as the FIRST CHARACTER of an identifier but they may be used after the first character of an identifier. The digits 0 through 9 may not be used as the first character of an identifier but they may be used after the first character of an identifier.

Which Characters May Be Used As The Second Character Of An Identifier,but Not As The First Character Of An Identifier?

Answer»

The DIGITS 0 through 9 MAY not be used as the FIRST CHARACTER of an identifier but they may be used after the first character of an identifier.

The digits 0 through 9 may not be used as the first character of an identifier but they may be used after the first character of an identifier.