If n = 8^8 – 8, what is the units digit of n?
Answers:  A) 0  B) 1  C) 8  D) 2  E) 4
8 ^ 8 - 8 = 8 (8 ^ 7 - 1)   ==&gt; 8 (2 ^ 21 - 1)   Last digit of 2 ^ 21 is 2 based on what explanation LiveStronger is saying. 2 ^ 24 - 1 yields   2 - 1= 
<gadget id="calculator">  2 - 1</gadget>
<output>1</output>
1 as the unit digit. Now on multiply this with 8, we get unit digit as 8   Answer : 8
<result>C</result>
If n = 8^8 – 8, what is the units digit of n?