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Question

If a coin is tossed two times, then what is the probability of getting a head at least once ?

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Solution

If two coins are tossed, then the total outcomes :
{HH, HT, TH, TT} 4 outcomes

The favourable outcomes of getting at least one head :
{HH, HT, TH} 3 outcomes

Therefore, required probability = 34.

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