Which comparison operator indicates a value is not equal?

Question

Which comparison operator indicates a value is not equal?

BlackTom AI · Accepted Answer

The not-equal comparison operator is "<>". Relevant knowledge: Comparison operators compare two values and return a boolean result (true or false). Common operators are "<" (less than), ">" (greater than), "<=" (less than or equal to), ">=" (greater than or equal to), and a not-equal operator (expresses that two values are different). Different languages express not-equal differently: many C-family languages use "!=" or "!==", while SQL and some older languages use "<>". Step-by-step reasoning with examples: 1. Interpret each option: - "<>": reads as "not equal to". - "<": reads as "less than". - "<=": reads as "less than or equal to". - ">=": reads as "greater than or equal to". 2. Evaluate sample comparisons to see which operator yields true when values differ: - 5 <> 3 evaluates to true (5 is not equal to 3). - 5 < 3 evaluates to false (5 is not less than 3). - 5 <= 5 evaluates to true (5 is equal to 5, so "less than or equal"). - 5 >= 6 evaluates to false (5 is not greater than or equal to 6). 3. The only operator that specifically asserts inequality (the two sides are not the same) is "<>". Why the correct answer is correct: "<>" explicitly denotes inequality; it returns true exactly when the left-hand and right-hand values differ. In SQL and some notation standards, "<>" is the canonical not-equal operator. Why the other options are incorrect: - "<" checks strictly that the left value is smaller than the right, not inequality in general. - "<=" allows equality as well as less-than, so it does not represent "not equal". - ">=" allows equality as well as greater-than, so it also does not represent "not equal". Conclusion: The correct comparison operator indicating "not equal" is "<>", which matches the provided answer.

Which comparison operator indicates a value is not equal?Single choice

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