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A coin tossed twice. Find the probabilit...

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

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The correct Answer is:
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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MBD PUBLICATION-PROBABILITY-QUESTION BANK
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