Question

There is a number whose unit place digit is 1.Now we find it's square root. What will be the possible digit at the unit place of that square number? *

1 or 9

2 or 8

3 or 7

4 or 5​

Answer 1

Answer:

1 or 9

because when the unit digit will be 1 or 9 so there last digit of square will be in 1 or 9.

Answer 2

Answer:

1 or 9 because of unit place digit is 1.

the square root in 1or 9