What is a Boolean expression and how is it evaluated using a truth table?

What is a Boolean expression and how is it evaluated using a truth table?

• A. A boolean expression is a numeric equation; truth table shows numbers.
• B. A boolean expression combines true/false values using operators; evaluated by listing inputs and outputs in a truth table.
• C. It is about file formats with true and false values.
• D. It lists all possible input values for a single scenario.

Answer: (B)

Boolean expressions are formed by taking true/false values and combining them with logical operators such as AND, OR, and NOT to produce a new true/false result. Evaluating such an expression means calculating that result for the given inputs. A truth table shows every possible combination of those inputs and the corresponding output of the expression, letting you see exactly how it behaves in all cases. The best choice captures both ideas: it describes combining true/false values with operators and being evaluated by listing inputs and outputs in a truth table. The other options mischaracterize boolean expressions as numeric equations, or as file formats, or describe listing only a single scenario’s inputs rather than all possible inputs.

Boolean expressions are formed by taking true/false values and combining them with logical operators such as AND, OR, and NOT to produce a new true/false result. Evaluating such an expression means calculating that result for the given inputs. A truth table shows every possible combination of those inputs and the corresponding output of the expression, letting you see exactly how it behaves in all cases. The best choice captures both ideas: it describes combining true/false values with operators and being evaluated by listing inputs and outputs in a truth table. The other options mischaracterize boolean expressions as numeric equations, or as file formats, or describe listing only a single scenario’s inputs rather than all possible inputs.