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 Answer: Option D
Explanation
The outcomes are {HHH, HHT, HTT, HTH, THH, THT, TTH, TTT}
P(at least two heads) = (frac{4}{8})
= (frac{1}{2})
There is an explanation video available below.