What is the units digit of (44^4)(33^5)(21^6)? Select
A) 0 B) 2 C) 4 D) 6 E) 8
The units digit of 44^4 is the units digit of 4^4 which is 6.   The units digit of 33^5 is the units digit of 3^5 which is 3.   The units digit of 21^6 is the units digit of 1^6 which is 1.   The units digit of 6*3*1 is 8.   The answer is 8.
<result>E</result>
What is the units digit of (44^4)(33^5)(21^6)?