Fifteen persons reporting to a Red Cross center one day are typed for blood, and the following
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Fifteen persons reporting to a Red Cross center one day are typed for blood, and the following counts are found:
Blood group O A B AB Total No. of persons 3 5 6 1 15 If one person is randomly selected, what is the probability that this person’s blood group is:
(a) AB?
(b) Either A or B?
(c) Not O?
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Mehwish Aziz
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