Answer
a) 4
b) 4
c) 2
d) 6
Work Step by Step
a) This question is asking for the number of values in set A. We see that there are 4 values in set A.
b) This question is asking for the number of values in set B. We see that there are 4 values in set B.
c) This question is asking for the number of values in set A and set B. We see that there are 2 such values.
d) This question is asking for the number of values in set A or set B. We see that there are 6 such values.