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There are 4 separate (mutually exclusive) regions in this diagram: 1) the part inside both circles (their intersection), 2) The part inside O but not inside C, 3) the part inside C but not inside O 4) The part outside both O and C.
Since 22 like both flavors, that number goes in the intersection of O and C.
Since 75 like Cherry, and 22 like both, 75-22=53 like Cherry but not Orange.
Since 94 like Orange, and 22 like both, 94-22=72 like Orange but not Cherry.
Together the 4 sections include 150 people and the 3 sections so far filled include 22+53+72=147 people, so 150 - 147 = 3 people like neither Orange nor Cherry.
The answers to the questions:
a) how many liked only orange flavor? *** 72
b) how many liked only cherry flavor? *** 53
c) how many liked either one or the other or both? *** 147
d) how many liked neither? *** 3