+0  
 
0
25
2
avatar

Some perfect squares (such as 121) have a digit sum $(1 + 2 + 1 = 4)$ that is equal to the square of the digit sum of their square root $(\sqrt{121}=11$, and $(1 + 1)^2 = 4)$. What is the smallest perfect square greater than 100 that does not have this property?

 
 Jun 23, 2022
 #1
avatar
0

The answer is 676.

 
 Jun 23, 2022
 #2
avatar+123309 
+1

196  =  1 + 6 + 9  =  16

 

sqrt (196) = 14     

 

(1 + 4)^2  =  25

 

 

cool cool cool

 
 Jun 23, 2022

5 Online Users