What is the probability that a randomly chosen blood

Human blood may contain either or both of two antigens, A and B. Blood that contains both antigens A and “B is called AB, and blood that contains neither antigens is called type O. At a certain blood bank. 35% of the blood donors have type A blood, 10% have type B, and 5% have type AB. a. What is the probability that a randomly chosen blood form a donor is type O? b.A recipient with type A blood may safely receive blood form a donor whose blood does not contain the B antigen. What is the probability that a randomly chosen blood donor may donate to a recipient with type A blood?

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