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
\(\frac{1}{2}\)
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
The outcomes are {HHH, HHT, HTT, HTH, THH, THT, TTH, TTT}
P(at least two heads) = \(\frac{4}{8}\)
= \(\frac{1}{2}\)
Source: Myschool Past Questions Archive (Record #54961)