What is the remainder when 9^19 is divided by 5 ?  Choose the correct choice.
A) 0 B) 1 C) 2 D) 3 E) 4
9^0 = 1   9^1 = 9   9^2 = 81   9^3 = 729   9^4 = ...1   9^5 = .....9   And so on in a distinct last-digit pattern of 9,1,9,1... after ignoring the first last-digit of 1   19/2 = 9 (with a remainder of 1) So the last number is a 9.   Alternatively, 19 is an odd number and hence the last digit is a 9   When 9^19 is divided by 5 the remainder is 4, ANS = 4
<result>E</result>
What is the remainder when 9^19 is divided by 5 ?