Answer:
1/8
Step-by-step explanation:
Chance of getting heads: 1/2
Chance of getting orange marble; 1/4
OMG this is so hard to explain.
basically, you have a 1/2 chance of getting Heads. from there, you have to multiply your chance of getting heads by 1/4. This gives us 1/8. We have a 1/8 chance of getting both heads and the orange marble.
H T
B P G O B P G O
These are the charts that you use to solve this.
Hopefully this helped. Good luck!
