Answer:
Step-by-step explanation:
a³-b³=(a-b)(a²+ab+b²)
6³-1=6³-1³=(6-1)(6²+6*1+1²)=5×43
so 6³-1 is divisible by 5.
 
        
                    
             
        
        
        
Answer:
2
Step-by-step explanation:
 
        
                    
             
        
        
        
Your picture kinda crops the answer :((
        
             
        
        
        
Answer:
Divide the no. by three 
Step-by-step explanation:
153÷3 = 51
so, 51+51+51 = 153