Answer:
c 
Step-by-step explanation:
 
        
                    
             
        
        
        
√16=4
Hope i could help. -\(-_-)/-
        
                    
             
        
        
        
5/10 *2/4
Cross out 2 and 10, divide by 2. 2/2=1 , 10/2=5
5/5*1/4= 5/20
reduce the fraction
divide by 5 for the numerator and denominator
5/5=1
20/5=4
5/10*2/4=1/4 
Answer: 1/4
 
        
             
        
        
        
Answer:
27 years
Step-by-step explanation:
21 × 2 = 42
42 - 15 = 27
 
        
             
        
        
        
Answer with explanation:
The given statement is which we have to prove by the principal of Mathematical Induction 
     
1.→For, n=1
L H S =2
R H S=1
2>1
L H S> R H S
So,the Statement is true for , n=1.
2.⇒Let the statement is true for, n=k.
       
                    ---------------------------------------(1)
3⇒Now, we will prove that the mathematical statement  is true for, n=k+1.
      
Hence it is true for, n=k+1.
So,we have proved the statement with the help of mathematical Induction, which is
       