Question

$23453$ is not a perfect square. Give reason.

• A. Because last two digits are $53$
  
• B. Because number ends with $3$
  
• C. Because last digit is not divisible by $3$
• D. Data insufficient
  

Answer 1

Answer: (B)

Because number ends with $3$

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

Since $23453$ ends with $3$

Hence, it is not a perfect square.

Option B is correct.