Q10 of 50 Page 15

The percentage of marks obtained by a student in monthly unit tests are given below :


Find the probability that the student gets :


(i)More than 70% marks


(ii) Less than 70% marks


(iii) A distinction.

Concept Used:



Explanation:


Let,


(i) E be the event of getting more than 70% marks


The number of times E happens = 3


P(A) = 3/5 = 0.6


(ii) F be the event of getting less than 70% marks


The number of times F happens = 2


P(B) = 2/5 = 0.4


(iii) G be the event of getting a distinction


The number of times G happens = 1


P(C) = 1/5 = 0.2


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