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In Q.1, Exercise 14.2, you were asked to prepare a frequency distribution table regarding 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.
Blood GroupNumber of students
O12
A9
B6
AB3


Answer :

Number of students having blood group AB = 3

Total number of students = 30
Hence, required probability is \(P = \frac{3}{30} = \frac{1}{10}\).

Therefore, the probability that a student of this class, selected at random, has blood group AB is \(\frac{1}{10}\).

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