In a class of 60 boys and 20 girls,half of the boys and half of the girls know the cricket.find the probability of the event that a person selected from the class is either boy,or a girl knowing cricket
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let boys knowing cricket = 60/2=30
let girls """"""" =20/2=10
Probability = 30 +10/total students
= 40/80
=1/2=0. 5
let girls """"""" =20/2=10
Probability = 30 +10/total students
= 40/80
=1/2=0. 5
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