80,873,72,72,64,81,56,?
Pick: A) 96 B) 98 C) 89 D) 90 E) 88
odd place numbers 80, 72, 64, 56 are divisible by 8.   even place numbers 873, 72, 81 are divisible by 9,so required number is in even place, from options 90 is only value visible by 9, so 90 is the answer.   ANSWER:90
<result>D</result>
80,873,72,72,64,81,56,?