C#.NET — Which of the following are NOT relational operators? = != Not <= <>=

Introduction / Context:
Relational operators in C# are used to compare values. Identifying invalid operators is important to avoid syntax errors.

Given Data / Assumptions:

• Valid relational operators: >, <, >=, <=, ==, !=.
• Invalid: Not, <>=.

Concept / Approach:
Check each candidate operator against the list of defined relational operators.

Step-by-Step Solution:

Verification / Alternative check:
Compilation with Not or <>= leads to errors. Correct logical negation is !, and inequality is !=.

Why Other Options Are Wrong:
Options including valid operators are incorrect.

Common Pitfalls:
Confusing SQL inequality syntax (<>) with C# (!=).

Final Answer:
3, 5