The answer may me 17,27,37,47,57,67,77,87,97
mark me as brainlist
as all the terms are given
then multiply them and the answer will be 60.
then to find the cost of the inner of the room and ceiling multiply 60 with 50
bro when you will be grown up you will be have a successful life.
when you will be grown up you will be have a successful life.but now you are learning from these guys. will be coming again to you later and will be saying that sorry i have cheated