A coin is tossed successively three times. Find the probability of getting exactly one head or two heads?
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Answer:
Answer: HTT,THT,TTH.
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Step-by-step explanation:
The probability of getting one head.
Favourable outcome
(HTT) (THT) (TTH)
probability = 3/8
the probability of getting two heads.
favourable outcome
(HHT) (HTH) (THH)
probability = 3/8
total probability of getting exactly one head or two heads is = 3/8 + 3/8
= 3/4
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