2. You are given two sets of data: X = {1, 4, 2, 15} and Y = {54, 121, 16, 400}. (20 points total] a. How large is the set X? (2 points} b. What is the value of the element at index number 2 in set X? [3 points] c. What is the solution of: ELllxl-z) {5 points} d. What is the solution of: Sign} (5 points} 1'2 e. What is the solution of: 23:1 (Jr) [5 points}