Find unit digit of{(6374)^1793 x (625)^317 x (341)^491}.	Choose the correct answer.
A) 5  B) 15  C) 0  D) 20  E) 69
Explanation:   Unit digit of 6374 is 4.   Unit digit of 625 is 5.   Unit digit of 341 is 1.   Just multiply   4*5*1= 
<gadget id="calculator">  4*5*1</gadget>
<output>20</output>
20   So unit digit of 20 is 0.   Answer 0.
<result>C</result>
Find unit digit of{(6374)^1793 x (625)^317 x (341)^491}.