In Boolean logic, which operator yields true if at least one operand is true?

In Boolean logic, which operator yields true if at least one operand is true?

• A. AND
• B. NOT
• C. OR
• D. XOR

Answer: (C)

The operator that yields true if at least one operand is true is OR (inclusive OR). In Boolean logic, OR outputs true whenever any input is true, including the case where both inputs are true. The usual truth table shows: false OR false = false; true OR false = true; false OR true = true; true OR true = true. This makes OR the right choice for expressing “at least one condition is satisfied.” By contrast, AND requires both inputs to be true, NOT negates a single input, and XOR is true only when exactly one input is true.

The operator that yields true if at least one operand is true is OR (inclusive OR). In Boolean logic, OR outputs true whenever any input is true, including the case where both inputs are true. The usual truth table shows: false OR false = false; true OR false = true; false OR true = true; true OR true = true. This makes OR the right choice for expressing “at least one condition is satisfied.” By contrast, AND requires both inputs to be true, NOT negates a single input, and XOR is true only when exactly one input is true.