Oh, got it the wrong way around LOL!

OK, I need to know a little more. Is the data "soft" or "hard" (my words), in other words, is it

A) like a survey where the data is not exact, or

B) is each one an actual equation (ie, if you have values for a to e then they will always get the results shown)

If it is A) then it is **Statistics**, in other words something like "people who have 12 of a, and 26 of b ... have a satisfaction level of 9". And in Statistics there are many different ways of solving the "best fit", depending on how the data was collected and what results you want.

If it is B), then just pick any 5 and solve them, the rest should also be right