If L = [1, 2, 3], which of the following operations produce the list [1, 2, 3, 1, 2, 3]?

Consider the built-in hash() function in a single Python execution process. If variable 'a' is assigned the string 'data' and variable 'b' is assigned 'data', what is true regarding their hash values?

In Python, which of the following data types is unhashable (mutable) and therefore cannot be used as a key in a dictionary?