Question

If the units digit of a perfect square is 4, then the units digit of its square root can be: A. 2 B. 8​

Answer 1

Answer:

the unit digit is A

Step-by-step explanation:

2 × 2= 4

Answer 2

Step-by-step explanation:

Unit digit of multiplication of 2 numbers is obtained by taking the last digit of the multiplication of two numbers i.e. the digits in the unit place.

Units digit of 39×39 is obtained by taking the last digit of 9×9=81.

=>Unit digit of square of 39 is 1.

I hope I helped you dear