Question

Consider the universal set U = (x is an element of N/3 < x < 13), and the subsets A= (multiples of 3) and B =(4,6,12)
a. List the elements of the following set.
A
b. List the elements of the following set.
*the intersection of A and B'
c. write down one element of (A u B)'
d. One of the elements of the statements in the table below is false. Indicate with an X which statement is false. Give a reason for your answer.
n (A u B) = 4 ____________
15 is an element of A' ____________
A is a subset of A u B ____________

Answer 1

A = {6,9,12}
Now the rest should be easy, if you understand anything at all about set operations.