Question 1155136
<font color=black size=3>
set A has 66 elements, 1 of which is also in set B (since 1 is in both). So 66-1 = 65 elements are just in set A but not in set B.


set B has 94 elements, 1 of which is also in set A. So 94-1 = 93 are in set B only (but not set A).


We have:
65 elements in set A only
93 elements in set B only
1 element in both set A and set B


Add up the values:
65+93+1 = 159


Answer: <font color=red size=4>159</font> values are in either set or both sets at the same time.


An alternative way to get the answer is to add up the values in sets A and B
66+94 = 160
Then we subtract off 1, which is the number of elements in both sets. We do this because we double counted this value when we add up 66 and 94. So we get 160-1 = 159.
</font>