When 3 coins are tossed. Find the probability of getting. (a) 1 head. (b) at most 1 head. (d) at most 3 heads (e) 3 heads
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hey!
when three coins are tossed the total outcomes are 8
HTH, HTT
THH, THT
HHH, HHT
TTH, TTT
•probability = no of favourable outcomes/ total no of outcomes
(a) p(getting 1 head) = 3/8
(TTH,HTT,THT)
(b) p(getting at most 1 head) = 4/8 = 1/2
at most 1 head will include 0 heads too
(TTT,TTH,HTT,THT)
(c) p(getting 3 heads) = 1/8 (HHH)
when three coins are tossed the total outcomes are 8
HTH, HTT
THH, THT
HHH, HHT
TTH, TTT
•probability = no of favourable outcomes/ total no of outcomes
(a) p(getting 1 head) = 3/8
(TTH,HTT,THT)
(b) p(getting at most 1 head) = 4/8 = 1/2
at most 1 head will include 0 heads too
(TTT,TTH,HTT,THT)
(c) p(getting 3 heads) = 1/8 (HHH)
shreyasonit6:
In the first sub question why didn’t you inlude 2 head in no. Of probabilities
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