two coins are tossed Simultaneously. fing the probality of getting exactly on head
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sample space={HH,HT,TH,TT,}
n(s)=4
let the probability of getting exactly on head , be A
A={HH,HT,TH}
n(A)=3
n(P)=n(A)/n(s)
=3/4
n(P)=3/4
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