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प्रश्न
Do the following activity -
Activity I : Total number of students in your class, n(S) =
Number of students from your class, wearing spectacles, n(A) = 
Probability of a randomly selected student wearing spectacles, P(A) =
Probability of a randomly selected student not wearing spectacles, P(B) = 
उत्तर
Activity I :
Total number of students in your class, n(S) = 40
Number of students from your class, wearing spectacles, n(A) = 6
Probability of a randomly selected student wearing spectacles, P(A) =`6/40`
`=3/20`
Probability of a randomly selected student not wearing spectacles, P(B) =`(40-6)/40`
`=34/40`
`=17/20`
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