Answer
a) 5
b) 5
c) 2
d) 8
Work Step by Step
a) This question is asking for the number of values in set A. We see that there are 5 values in set A since there are 5 vowels.
b) This question is asking for the number of values in set B. We see that there are 5 values in set B since there are 5 letters in the word spare.
c) This question is asking for the number of values in set A and set B. We see that there are 2 such values since there are two vowels in the word spare.
d) This question is asking for the number of values in set A or set B. We see that there are 8 such values.