Hello, I am currently generating a campaign of experiments in where I have four factors (conditions like temp, pressure, etc.) at different levels. I am looking to find out the total number of factor combinations, or essentially the total number of condition combinations, that I will have at the end. Here are my desired factor levels: Factor 1, 4 levels Factor 2, 4 levels Factor 3, 3 levels Factor 4, 3 levels I'm not sure how to go about calculating this - it would be easy if it were 4 factors and 4 levels, but I'm at a loss to the case where I have different levels for each factor. Any help would be greatly appreciated, thanks!