Question

The square number 25 has the property that when its digits are increased by 1 it is converted to 36 , another square number. there is one 4-digit square number with the same property, What is it ?

Answer 1

Answer :

5² = 25
And

( 5 + 1 ) ² = 6² = 36

We get 4 - digit square number with the same property :

55² = 3025
And

( 55 + 1 )² = 56² = 3136 ( Ans )