Gitta is asked to find the probability of getting all heads on 3 coin tosses. this is a compound event.

1. P(getting all head)=

2. Event: getting all head can happen in only one way: HHH

3. n(Sample space) can be calculated by 

     a. counting, a good ways to organize counting is drawing a tree diagram, CHECK THE PICTURE

or     
     b. There are 2 possible outcomes each time we throw the dice so 2*2*2=8 is the total number of outcomes, that is the number of the sample space.

4. So finally P(getting all head)=
   

Ais the correct answer

Is there a picture because i cannot answer it sorry