Assignment:
Q1) List all subsets of the set {a, b, c, d}.
Q2) Determine the number of subsets of the set A = {a, b, c, d, e, f}, without writing them down.
Q3) Determine the number of subsets of the set B = {a, b, c, d, e, f, g, h, i} , without writing them down.
Provide complete and step by step solution for the question and show calculations and use formulas.