<PRE><B>Question 109494</B>
a group of 100 people have the blood types A20  B24  AB10  O46.
If 1 person is selected at random 
what is the probability 
that the person has type AB blood  = 10/100 = 1/10
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the person has either type A of type O blood = (20/100)+(46/100) = 33/50
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: the person does not have type B blood = 1-(24/100) = 76/100 = 19/25
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: the person has neither type B nor type O blood = (24/100)(46/100)=0.1104
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Cheers,
Stan H.</PRE>