I have just found this wonderful site while trying to find the following questions.1}what starts this series?-8 1 6 3 2 6 4 1 2 8 what ends this series?1 9 3 8 7 6 1 5 2 3 0 what are X and Y 3 7 4 6 21 12 12 84 36 24 420 X Y Iwould be grateful for an explanation of the answer My Maths exams were always a nightmare!