Which of the following is not correct in context of scope of variables ?

1. Global keyword is used to change value of a global variable in a local scope.
2. Local keyword is used to change value of a local variable in a global scope.
3. Global variables can be accessed without using the global keyword in a local scope.
4. Local variables cannot be used outside its scope.

Which of the following function calls can be used to invoke the below function definition ?
def test(a, b, c, d)

1. test(1, 2, 3, 4)
2. test(a = 1, 2, 3, 4)
3. test(a = 1, b = 2, c = 3, 4)
4. test(a = 1, b = 2, c = 3, d = 4)

For a function header as follows :
def Calc(X,Y = 20):
Which of the following function calls will give an error ?

1. Calc(15, 25)
2. Calc(X = 15, Y = 25)
3. Calc(Y = 25)
4. Calc(X = 25)

What is a variable defined outside all the functions referred to as ?

1. A static variable
2. A global variable
3. A local variable
4. An automatic variable