Question

Which of the following number is a perfect square?
1. 197
2. 168
3. 241
4. 441

Answer 1

Correct Answer - Option 4 : 441

Let's check each number:

1) 197

14² = 196 , 152 = 225 

Given number lies between squares of 14 and 15 so it is not a perfect square.

2) 168

13² = 169, 142 = 196

Given number lies between squares of 13 and 14 so it is not a perfect square.

3) 241

15² = 225, 162 = 256

Given number lies between squares of 15 and 16 so it is not a perfect square.

4)  21² = 441 

Hence, 441 is the correct answer.