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Mathematics, 27.04.2021 20:30 evanwall91

There are 4 blood types, and not all are equally likely to be in blood banks. 49% of donations are O blood, 27% of donations are type A blood, 20% of donations are type B blood, and 4% of donations are type AB blood. A person with Type B blood can safely receive blood transfusions of Type O and Type B blood. What is the probability that the 4th donation selected at random can be safely used in a blood transfusion on someone with Type B blood?

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