# PROBLEMS # give a Python expression for the set of number from 1 to 20 (including 20) pl = set() print("pl =", set()) # The function isEven (x) returns True if x is even # The function isOdd(x) returns True if x is odd def isEven (x) : return x 2 == 0 def isodd(x): return not isEven (x) # use these function to create a set of even numbers from 1 to 20 p2 = set() print("p2 =", set()) # Now get the set of odd numbers betwee 1 and 20, # and show that the intersection of even numbers and odd numbers is the empty set. # p3 = evens intersect odds p3 = seto print("p3 set()", p3 == set()) ==