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If a fair coin is tossed 3 times, what is the probability of getting at least tw...

Question

If a fair coin is tossed 3 times, what is the probability of getting at least two heads?

Options

A) $$\frac{2}{3}$$

B) $$\frac{4}{5}$$

C) $$\frac{2}{5}$$

D) $$\frac{1}{2}$$

Explanation:

The outcomes are {HHH, HHT, HTT, HTH, THH, THT, TTH, TTT}
P(at least two heads) = $$\frac{4}{8}$$
= $$\frac{1}{2}$$

Dicussion (1)

• The outcomes are {HHH, HHT, HTT, HTH, THH, THT, TTH, TTT}
P(at least two heads) = $$\frac{4}{8}$$
= $$\frac{1}{2}$$