we start at the top and write 2 and add 3 for every line we go down: 29 * 1 = 2 29 * 2 = 5 29 * 3 = 8 29 * 4 = 11 29 * 5 = 14 29 * 6 = 17 29 * 7 = 20 29 * 8 = 23 29 * 9 = 26 29 * 10 = 29 Next, we start the bottom of the list. add on a 0 at the end, and for each line we go up, we add 1 more from the previous line 29 * 1 = 29 29 * 2 = 58 29 * 3 = 87 29 * 4 = 116 29 * 5 = 145 29 * 6 = 174 29 * 7 = 203 29 * 8 = 232 29 * 9 = 261 29 * 10 = 290