The "not equal" sign is represented by the symbol "≠". This symbol is used in mathematics to indicate that two values or expressions are not equal to each other. For example, if a = 5 and b = 7, we can write the statement "a ≠ b" to express that a is not equal to b. The not equal sign is used in various mathematical operations, such as algebra and calculus, and is a fundamental symbol in the study of mathematics and computer science.
