What is the difference between int and System.Int32 CLR types?

What will be the return value if the function fn is called with a value of 50 for the parameter var? public int fn(int var) {     int retvar = var - (var / 10 * 5);     return retvar; }

Which of the following code snippets converts an IEnumerable into a string containing comma separated values?

Which of the following is true regarding a null and an empty collection in C#?

Which of the following statements are true regarding the ref and out parameters in C#?

What is the difference between the String and StringBuilder class objects with respect to mutability?

Is String is Value Type or Reference Type in C#?

Which option is an Value type?

Which keyword is used to terminate the execution at a particular stage of a statement?

What is GC?

Does C# support multiple inheritance?