Q20 of 50 Page 15

The blood groups of 30 students of class IX 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, B, A , B, O


A student is selected at random from the class from blood donation. Find the probability that the blood group of the student chosen is :


(i) A


(ii) B


(iii) AB


(iv) O

Concept Used:



Explanation:


Given:


(i) The probability of a student of blood group A


(ii) The probability of a student of blood group B


(iii) The probability of a student of blood group AB


(iv) The probability of a student of blood group O


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