Answer:
253.5
Step-by-step explanation:
basically i had the same question so yeah! and im a pro at math
 
        
                    
             
        
        
        
Es la segunda media es 1.65, mediana es 1.65, y modo es 1.61
        
             
        
        
        
Answer:im bored
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
680
Step-by-step explanation:
Use the binomial coefficient where you choose 
 numbers out of 
 possible numbers and find the total amount of combinations since order does not matter:

Thus, you can make 680 three-non-repeating-number codes