Question

. Write the unit digit of the square of the following.

a) 252 ​

Answer 1

4 is the unit digit of the square of 252 .

You can find out the unit digit of the square of any number, by multiplying the unit digit of that number by itself, for example - the number 859 ,the unit digit of its square is 1 .....

We find it by multiply 9*9 = 81 ...

Whose unit digit is 1.....

I hope this is helpful.....