N is the amount of sides 
sum=13 times 180 =2340
        
             
        
        
        
Yes it is true! it is true because two different numbers go to the same number, if it was false it would have to be the one number to two different numbers.
Hope that made sense!
        
             
        
        
        
So the total amount of marbles is: 20+12=32
there are 20 pink marbles
20/32 = 10/16 = 5/8 (simplified)
        
             
        
        
        
Answer:
the question is incorrect.
 
        
             
        
        
        
Isn’t it choice B …….…………