Find all number which its square has 4 digits number and divisible 33

• In order to solve type of this problem, you have to understand about divisible theory of natural number. As GCD (Greatest Common Divisor) and LCM (Least Common Divisor). When you know about GCD and LCM, you surely can simplify the problem to be more easier to solve. 
• As example of our problem, `33=3.11` and `GCD(3;11)=1` Then, our problem can be found as divisible with `3` and `11` 

 Solution