Question

(-1)to the power of 501
[(27)to the power of 4 divided by(9)to the power of 5]

Answer 1

Step-by-step explanation:

For any power of 3 unit digits would be 1, 3,7,or 9. Also if you notice, after every 4th power of 3, the unit digit would repeat itself.

Therefore, in the question 3^243 (or 3^(240+3)) would have unit digit of 7

Hence when divided by 5, it will give remainder =2.