Answer:
8
Step-by-step explanation:
When flipping a coin, you get a head (H) or a tail (T)
The second part of the tree diagram will be HT HT
The third part of the tree diagram will be HT HT HT HT
The outcomes are 8
H-------H---------H---------HHH
T-------- HHT
T----------H----------HTH
T---------HTT
T-------H-----------H---------THH
T---------THT
T------------H--------TTH
T--------TTT
