Question

which in the value of 4power of 2020 end de what is the digit in the units place of the
expansion of 4power if 2020
​

Answer 1

Answer:

Divide the exponent 'y' by 4.

If the exponent y is exactly divisible by 4. i.e, y leaves a remainder 0 when divided by 4. Then, the units digit of xy is 6, if l = 2, 4, 6, 8. ...

If y leaves a non-zero remainder r, when divided by 4 (i.e y = 4k + r). Then, the units digit of xy = lr.