I'm a student learning Scheme and we have been learning natural numbers in class. We have already done homework assignments on them and now some advanced problems have been posted for extra credit. There are two problems that deal with natural numbers and lists in scheme. I don't understand how to do them and I am looking for guidance on these problems. I don't want someone to just give me the answer but someone who would take the time to walk me through and help me understand the problems. If you're interested in helping me just post back here or PM me your AIM address (seems to be the most efficient way to talk about the problems), thanks for your time and I really hope someone decides to help.