My maths homework was to fill in some sequences and find the rule with the nth term. So far, I have been given sequences like 3, 6, 9, 12, 15, 18 which the numbers are getting bigger. But this sequence really got me wondering is the answer different if the numbers are getting smaller? Because the sequence (36,33,30,27,24,21,18) is going down in 3, I thought that if the sequence was turned the other way around it would be 18,21,24,27,30,33,36 and the rule would 3n, but I'm not sure if the answer would be the same backwards. PLEASE HELP!