Question

find the last digit of 1021^3921+3081^3921 plz answer it fast !!!!!!!!!!!!!!!!!!!!!

Answer 1

Answer:

This question has nothing to do with any digit except the unit digit.

we know that 1^2=1

1^3=1

1^4=1 and so on

so any power of one.

so the unit digit of 1021^3921=1

similarly 3081^3921=1

so the unit digits are 1 in both the numbers

so sum is 1+1=2