the blood groups of 30 students of class 9 are recorded as follows; A,B;O;O;AB;O;A;O;B;A;O;B;A;O;O;A;AB;O;A;A;O;O;AB;B;A;O the form of a frequency distributio table. which is the most common' and which is the rarest,;B;A;B;O represent this dats in blood group among these students?
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the blood groups of 30 students of class 9 are recorded as follows; A,B;O;O;AB;O;A;O;B;A;O;B;A;O;O;A;AB;O;A;A;O;O;AB;B;A;O the form of a frequency distributio table. which is the most common' and which is the rarest,;B;A;B;O represent this dats in blood group among these students?
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