We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
+1
256
1
avatar+95 

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?

 Sep 30, 2018
 #1
avatar
+1

It looks like 196 =14^2. 1 + 9 + 6 =16. But (1+4)^2 =25

 Sep 30, 2018

6 Online Users