1.

Find the unit digit of (33)^(123)

Answer»

Solution :SINCE we KNOW that the unit digit of `(33)^123` will be same as `(3)^123`. Now the unit-digit of `3^123` will be 7 since will be equal to the unit digit of `(3)^3`.
Thus the unit digit of `(3)^123` is 7.


Discussion

No Comment Found