Three different coins are tossed together.find the probability getting option (a) exactly two heads (b) at least two heads (c) at least two tails
Answers
Answer:
hi mate
Step-by-step explanation:
(i) P(Getting exactly two heads) = 3 / 8
(ii) P(Getting at least two heads) = 1 / 2
(iii) P(Getting at least two heads) = 1 / 2
Step-by-step explanation:
Possible outcomes when three coins are tossed together:
= 2 * 2 * 2 = 8 Possible Outcomes
Always keep in mind this formula while calculating Probability of an event:
(i) No of possible outcomes for getting exactly two heads = HHT, HTH and THH.
3 possible outcomes for getting exactly two heads.
P(Getting exactly two heads) = 3 / 8
(ii) No of possible outcomes for getting at least two heads = HHT, HTH, THH and HHH.
4 possible outcomes for getting at least two heads.
P(Getting at least two heads) = 4 / 8
= 2 / 4
= 1 / 2
(iii) No of possible outcomes to get at least two tails = TTH, THT, HTT and TTT.
4 possible outcomes to get at least two tails.
P(Getting at least two tails) = 4 / 8
= 2 / 4
= 1 / 2
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answer = (a): 1/2 (b): 1/2
(c): 1/2