1. The unit digit in the square of the number 125 is

2. The unit digit in the square of the number 166 is

3. The unit digit in the square of the number 27 is

4. The unit digit in the square of the number 78 is

5. The unit digit in the square of the number 209 is

6. Which of the following is not a Pythagorean triplet?

7. If 102 = 100, then the square root of 100 is

8. If 252 = 625, then the square root of 625 is

9. What could be the possible one’s digit of the square root of 625 ?

10. What could be the possible one’s digit of the square root of 121?