What is the remainder when (71)(73) is divided by 9?
Pick
A) 1 B) 2 C) 4 D) 6 E) 8
(71)(73) = (72-1)(72+1) = 72^2 - 1 which is 1 less than a multiple of 9.   Then the remainder will be 8.   The answer is 8.
<result>E</result>
What is the remainder when (71)(73) is divided by 9?