Thread: help me out

a,b and c are 3 different digits of the number ABC where a,c is not equal to zero. the number got by reversing the digits is added to ABC and the sum is a perfect square. find all such 3 digit numbers.

Hi,
100*a+10*b+c+
100*c+10*b+100*a =
101*(a+c)+20*b
Prove
a+c =3,4,5...
and b= 1,2,3,4...
and see...