Hi. I am doing a combined commerce (fiancne)/Engineering (Chemical and Process) degree and as part of the course requirements on the commerce side of my degree i need to choose a maths unit. There are restrictions on what i can do, so there arent too many i can choose from. I basically just want to choose whatever will be most useful to a chemical engineer. Choices: Introduction to Geometric Topology I guess this would be an interesting unit, but i cant see it being relevent to my intended career path. Control Theory I dont know if this kinda thing is actually useful to a practicing engineer, but i know it goes really well with some of the other units i will be taking (Process dynamics and control), i think. Random Processes and Their Applications I guess statistics and random processes apply to everything. This is also a recommended (although not required) unit to another unit i will be taking, "Applied probability in commerce and finance". I also have interest in this unit, which is making this a very tempting choice. Codes and Ciphers I guess it could be interesting, but i cant see it being very applicable to what i plan on doing. Complex Variable Methods Industrial Statistics and Total Quality Management I think this would be the most applicable to engineering since it takes statistics and puts it in the context of industry and quality control. So they are the units i can choose from. I think i will choose either of the statistics units or the control theory unit, but any input at all will be great :) Thanks, Dan.