Answer:
[tex]\frac{3}{8}[/tex]
Step-by-step explanation:
There are a list of possible outcomes:
- TTT (1)
- TTH (2)
- THT (3)
- THH (4)
- HHH (5)
- HHT (6)
- HTH (7)
- HTT (8)
This represents 8 outcomes.
The only ones that have two tails are:
Because there are 3, this means that the probability in a fraction form of Brian getting exactly 2 tails is 3/8. P ( exactly 2 tails) = 3/8.
