OR function not returning “TRUE” when parameters met

Question

I have a large data set and have created a number of rules I want to use to filter out some of the unnecessary data points.

Here is a simplified example of some data:

Answer 1

In this case the best you can do is the following:

• Select the cell with the formula.
• Evaluate the formula step by step with the built-in evaluator in Excel (Tab Formulas>Evaluate Formula> Evaluate):

• Find your error and fix it.

Answer 2

I tried your exact example and there are 2 rows that returns true. I did check the formula and it seems fine as well:

if it's not the result you are expecting, maybe you could add a column and tell us which one are suppose to return true/false.