First of all, this shouldn't be in high school category.
Second, 20 divided by 2 is 10. Dividing is like subtraction. You would subtract 20 by 2, and you would find that after 10 times, you will get to zero.
        
                    
             
        
        
        
Since the chance of getting an even number on every roll is 3/6 or 1/2
We have to multiply 1/2 by 138 
The answer is 69. 
Hope this is correct, and pls correct me if I'm wrong :)
        
             
        
        
        
There Is no picture so I can see what you are talking about
        
             
        
        
        
For the given geometric sequence, we have:

So the correct option is B.
<h3>
Which is the recursive formula?</h3>
Here we have the geometric sequence:

To get the initial value of the geometric sequence, we just need to replace n by 1, so we get:

Now, notice that the common ratio is (-1/3), this means that each term of the sequence is (-1/3) times the previous term.

Then the correct option is B.
If you want to learn more about geometric sequences:
brainly.com/question/1509142
#SPJ1
 
        
             
        
        
        
600x1000 is how you would convert it