What is an example of a logical expression?

Rationale

z >= 67

A logical expression is one that evaluates to either true or false, often used in conditional statements. The expression "z >= 67" checks if the variable z is greater than or equal to 67, thus producing a boolean result.

A (z = 7) YOUR ANSWER

This statement is an assignment expression, not a logical expression. It assigns the value of 7 to the variable z, rather than evaluating a condition to return true or false.

B (6" + "7") YOUR ANSWER

This choice represents a concatenation of strings rather than a logical expression. The operation combines the two strings "6" and "7" resulting in "67", but does not involve any comparison or condition that yields a boolean outcome.

C (6 + 7) YOUR ANSWER

This is an arithmetic expression that results in the sum of 6 and 7, which equals 13. It does not evaluate a condition or return a boolean value; therefore, it does not qualify as a logical expression.

D (z >= 67) CORRECT

This is a proper logical expression that checks if the variable z is greater than or equal to 67. It evaluates to true if z meets the condition and false otherwise, making it a clear example of logical evaluation.

Conclusion

Logical expressions are crucial in programming and mathematical contexts as they determine the flow of control based on conditions. Among the given options, "z >= 67" serves as a suitable example since it evaluates to a boolean value, whereas the other choices either perform assignments, arithmetic, or string operations that do not fit the criteria for logical expressions.

What is an example of a logical expression?

z >= 67

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