You are developing a C# application. The application includes the following code segment (Line numbers are included for reference only.):

The application fails at line 24 with the following error message:

"An item with the same key has already been added."

You need to resolve the error. Which code segment should you insert at line 23?

You need to make a logical comparison where two values must return true in order for your code to execute the correct statement. Which logical operator enables you to achieve this?

What will be the output of the C#.NET code snippet given below?

Which of the following are the correct ways to decrement the value of variable a by 1?

1. ++a--;
2. a -= 1;
3. a += 1;
4. a --;
5. a = -1;

Please enter output result of the following code:

Which of the following is the correct way to implement the interface given below?

Which of the following will be the correct output for the C#.NET program given below?

What will be the output:

What will be the output of the following code snippet?

Which of the following statements are correct about arrays used in C#.NET?

1. Arrays can be rectangular or jagged.
2. Rectangular arrays have similar rows stored in adjacent memory locations.
3. Jagged arrays do not have an access to the methods of System.Array Class.
4. Rectangular arrays do not have an access to the methods of System.Array Class.
5. Jagged arrays have dissimilar rows stored in non-adjacent memory locations.