Question

The unit's digit of the square of 403 is -----------

Answer 1

The unit digit will be 9.....

Answer 2

here is your solution

The unit's digit of the square of 403 is 9


But how?

Firstly we see in 403 which is unit digit
so ,we find 3 is unit digit

again

A/q

square of unit digit

(3)^2 = 9

So,
The unit's digit of the square of 403 is 9