Q16 of 55 Page 623

A die is thrown 50 times and the outcomes are recorded as under.





















Outcome



1



2



3



4



5



6



No of times



11



9



8



5



7



10



If a die is thrown at random, what is the probability of getting 8?

Total number times a die is thrown: 50


We know that a die contains only 6 sides (1,2,3,4,5,6) and there is no 8 on any side of the die


Therefore, probability of getting 8 when a die is thrown is : 0


That is P(8) = 0

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14

In a medical examination of 40 students of a class, the following blood, groups are recorded:

















Blood group



A



B



AB



O



No of students



11



15



9



5



From this class, a student is chosen at random, What is the probability that the chosen student has blood group B?

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