When an unbiased coin is tossed three times. Find the probability of receiving three times heads and two times heads.
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Answer:
Given: three coin tossed
To find: the probability of getting head all three times
Sol: The sample space when three coins are tossed =HHH,HHT,HTH,HTT,THH,THT,TTH,TTT=8
The favourable outcome for all three being the head is HHH=1
Hence, the probability of getting head all three times = 81
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