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Get Answers to all your Questions
8.(iii) Three coins are tossed once. Find the probability of getting
(iii) atleast heads
Answers (1)
Sample space when three coins are tossed: [Same as a coin tossed thrice!]
S = {HHH, HHT, HTH, HTT, THH, TTH, THT, TTT}
Number of possible outcomes, n(S) = 8 [Note: 2x2x2 = 8]
Let E be the event of getting atleast 2 heads = Event of getting 2 or more heads = {HHH, HHT, HTH, THH}
n(E) = 4
The required probability of getting atleast 2 heads is .
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