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Q.10. The following table shows the blood group of 30 students of a class.


One student of the class is chosen at random. What is the probability that the chosen student has a blood group
(i) A
(ii) AB

Total number of students = 30
(i) Number of students having blood group A = 9
Probability of getting A =9/30 =3/10


and,
(ii) Number of students having blood group AB = 3

Hence, required probability of getting blood group AB,

Hope, you will find this answer helpful.
 

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Probability of getting A =  possible outcomes/total outcomes = 9/30 = 3/10
Probability of getting AB = 9+7/30 = 16/30 = 8/15

HOPE THIS HELPS AND ALL THE BEST
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