What is the units' digit of the following expression (13)^5*(15)^4*(17)^5?
Choices: A) 0 B) 1 C) 3 D) 5 E) 9
The unit digit of 3^5 is 3.   The unit digit of 5^4 is 5   the unit digit of 7^5 is 7.   The unit digit of 3∗5∗7 is 5.   Answer 5.
<result>D</result>
What is the units' digit of the following expression (13)^5*(15)^4*(17)^5?