What is the remainder when 9^1 + 9^2 + 9^3 +...+ 9^9 is divided by 9? Options.
A) 2	B) 3	C) 0	D) 5	E) None of the above
Notice that in the brackets we have the sum of 9 odd multiples of 9, which yields remainder of 0 upon division by 9.   Answer : 0
<result>C</result>
What is the remainder when 9^1 + 9^2 + 9^3 +...+ 9^9 is divided by 9?