What could be the range of a set consisting of odd multiples of 9? Choose the correct choice from the following answers.
A) 21  B) 24  C) 35  D) 72  E) 70
Range = the difference between the greatest and the smallest numbers in the sequence. Our sequence is odd and is a multiple of 7. Every number in that sequence can be represented like this: 9*(2n+1) where n is any positive integer.   Range = 9*(2m + 1) - 9*(2n + 1) = 9*2*(m-n) = 18 * (m-n).   m, n - any positive integers   The answer must be divisible by 18, which is only 72.   The correct answer is 72
<result>D</result>
What could be the range of a set consisting of odd multiples of 9?