Please help me this Java question...

prob. 16:

A) Matching:

B) You have an int variable, idNumber, that always contains a 4-digit number. Write an expression that will give you the second to last digit of idNumber. (the digit in the tens place)

C) (True or False) The following statement will compile in Java:

if(true);

A.) A group of 4 bits B.) Base 10 numbering system C.) Base-16 numbering system D.) Base-8 numbering system E.) A group of 8 bits 1.) decimal 2.) octal 3.) nibble 4.) hexadecimal 5.) byte