Relation Operator

1. Which of the following will evaluate to true only if boolean expressions A, B, and C are all False?

   • not A and not (B and not C)
   • not A or not B or not C
   • not (A or B or C)
   • not (A and B and C)
   • not A or not (B or not C)

2. Assume that a and b are integers. The boolean expression

   not (a <= b) and (a * b > 0)

   will always evaluate to True given that

   • a = b
   • a > b
   • a < b
   • a > b and b > 0
   • a > b and b < 0

3. Given that a, b, and c are integers, consider the boolean expression

   (a < b) or not ((c == a * b) and (c < a))

   Which of the following will guarantee that the expression is True?

   • c < a is False.
   • c < a is True.
   • a < b is False.
   • c == a * b is True.
   • c == a * b is True, and c < a is True.

4. In the following code segment, you may assume that a, b, and n are all type int.

   if (a != b and n / (a - b) > 90){
   	/* statement 1 */
   }else{
   	/* statement 2 */
   }
   /* statement 3 */

   What will happen if a == b is False?

   • /* statement 1 */ will be executed.
   • /* statement 2 */ will be executed.
   • Either /* statement 1 */ or /* statement 2 */ will be executed.
   • A compile-time error will occur.
   • An exception will be thrown.