Of course it does. Have they seen the question before? Are they really good with math? Are they really bad with math? Do they even know how to approach a mathem

Of course it does. Have they seen the question before? Are they really good with math? Are they really bad with math? Do they even know how to approach a mathematical problem like this if they've never seen the formula before? Do they even consider that there might be a mathematical formula to determine this, or do they immediately just try to brute force it? We can debate whether or not any of the above is useful information (I think it is), but not giving them the formula definitely gives you more information than just giving it to them.