Q1 Q2 What are the Arithmetic Operators that Python supports? Consider a two-dimensional numpy array mat with size 3*3. How to calculate the sum of each column in matrix (numpy array mat), how to calculate the sum of each row in matrix? Q3 Given a set write the python code to perform the following operations: Months 1 {"Jan", "March","May","July","August","October","December"} Months2 {"Feb","April","June","July","September"November","December"} (i) Union (ii) Intersection (iii) Difference between two sets Q4 Explain the function dtype, type, shape, size, reshape, ndim in numpy array.