Advanced Data Types and Operation in Python

Explain the difference between mutable and immutable data types in python. Write a Python program to create a set and perform union and intersection operations.

Explain the concept of mutable and immutable data type in python. For the given list of dictionaries, find the TOTAL MARKS obtained:

d = [
    {"subject": "math", "marks": 80},
    {"subject": "science", "marks": 90},
    {"subject": "english", "marks": 80}
]

Using two-dimensional list, write a program to add two matrices and create the third matrix and display it.