Question

819027 is obviously not a perfect square. Give reason

• A. Last two digits are 27
  
• B. Number ends with 7
  
• C. Number starts with 8
• D. Data insufficient
  

Answer 1

The correct option is B Number ends with 7

All the perfect square end with $0,1,4,5,6,9$

Since $819027$ ends with $7$

Hence, it is not a perfect square.

Option B is correct.