Two antigens, antigen A and antigen B, determine the four major human blood groups: A, B, AB, and O. The table below shows the percentage distribution of blood groups for the Caucasian population in the United States (American Red Cross, 2016).
Calculate the probability of randomly picking a blood sample that does not contain antigen B, that is, a blood sample that belongs to either blood group A or blood group O. Give your answer as a whole number percentage.
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