Blood group Number of students A 9 B 6 AB 3 O 12 Total 30 The above frequency distribution table represents the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.
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students of blood group A =9
students of blood group B = 6
students of blood group AB= 3
students of blood group O= 12
total no of students = 30
A. T. Q
no of favourable outcomes ( students having blood group AB) =3
probability= favourable outcomes /total no of outcomes
probability = 3/30
= 1/10
= 0.1
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