If a fair coin is tossed 3 times what is the pr... - JAMB Mathematics 2019 Question
If a fair coin is tossed 3 times, what is the probability of getting at least two heads?
A
\(\frac{2}{3}\)
B
\(\frac{4}{5}\)
C
\(\frac{2}{5}\)
D
\(\frac{1}{2}\)
correct option: d
The possible outcomes are {HHH, HHT, HTT, HTH, THH, THT, TTH, TTT}
Hence,
P(at least two heads) = \(\frac{4}{8}\)
= \(\frac{1}{2}\)
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