Suppose R = {1, 3, 5, 7, 9, 11, 13, 15, 17} and D = {3, 6, 9, 12, 15, 18, 21, 24, 27}. What R∩D is ?
R∩D represents the intersection of sets R and D. This means that R∩D is the set of elements that are common to both sets R and D.
From the given sets R = {1, 3, 5, 7, 9, 11, 13, 15, 17} and D = {3, 6, 9, 12, 15, 18, 21, 24, 27}, we can see that the common elements are {3, 9, 15}.
Therefore, R∩D = {3, 9, 15}.