1) complete the following items dealing with sets.

if set a = {3, 4, 7, 9} and set b = {8, 9, 10, 11}, list the elements in numerical order for

a b = {}

a b = {_}

2)if set a = {3, 4, 7, 9}, set b = {8, 9, 10, 11}, and set c = {4, 9, 11, 13, 15},

list the elements in numerical for a (b u c) = {}

3) if set a = {3, 4, 7, 9} and if set d = {9, 4, 3, 7}, a = d.

true or false