What is the remainder when 8^1 + 8^2 + 8^3 +...+ 8^9 is divided by 4?
Choose the correct choice from the following answers:  A) 4  B) 3  C) 2  D) 5  E) None of the above
Notice that in the brackets we have the sum of 9 even multiples of 4, hence the sum in the brackets will be even multiple of 4 (the sum of 9 even numbers is even). which yields remainder of 0 upon division by 4.   Answer : None of the above
<result>E</result>
What is the remainder when 8^1 + 8^2 + 8^3 +...+ 8^9 is divided by 4?