Prove That No Integer In The Following Sequence Is A Perfect Square:, 11, 111, 1111, 11111, ...

Prove that no integer in the following sequence is a perfect square:
11, 111, 1111, 11111, ...

 

Answer:

It starts from 11

So 1 is not included

Try other numbers:

11 × 11 = 121

121 is not the same with 111

Hope it helps ^_^

~~CraneFever