Comparing Boolean Expressions - AP Computer Science A

Logical OR. Returns true when at least one operand is true.

false. NOT operator flips true to false.

true. OR returns true if at least one operand is true.

Negates the Boolean value. The NOT operator flips true to false and vice versa.

true. NOT operator flips false to true.

Logical AND. Returns true only when both operands are true.

false. AND requires both operands to be true.

true. true OR anything is always true.

true. (true && false) is false, but false || true is true.

!a || !b. De Morgan's Law: negate AND, flip to OR, negate operands.

!a && !b. De Morgan's Law: negate OR, flip to AND, negate operands.

false. false AND anything is always false.

false. (true || false) is true, but true && false is false.

true. true OR anything is always true.

true. (true && true) is true, and true OR false is true.

true. (false && anything) is false, so !(false) is true.

false. (true && true) is true, (false || true) is true, !(true) is false.

false. Inner expression is true, so !(true) is false.

!, &&, ||. NOT has highest precedence, then AND, then OR.

true. (true || false) is true, and true && true is true.

true. Parentheses first: (false || true) is true, then true && true.

false. Both AND operations are false, so false OR false is false.

false. (true && true) is true, (false || true) is true, !(true) is false.

false. NOT operator flips true to false.

false. false OR !true becomes false OR false equals false.

Logical AND. Returns true only when both operands are true.

Negates the Boolean value. The NOT operator flips true to false and vice versa.

false. AND requires both operands to be true.

true. (false && anything) is false, so !(false) is true.