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A coin tossed twice. Find the probability of getting exactly one head

Answer»


Answer :A coin is TOSS TWICE.
`therefore S={HH,HT,TH,T T}, |S|=4`
Let A be the event of getting EXACTLY one head.
`thereforeA={HT,TH}implies|A|=2`
`P(A)=|A|/|S|=2/4=1/2`


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