Sadly this thread has gone in 2 negative directions , and I may have helped , assuming from the contest of the OP , they were just trying to find an easy way out ?
1st wrong direction is all the negative feedback , where as the better road to take may have been to try to show / teach how to find the answer - either option at worst the OP just does not come back it would appear , except without the attempt at teaching - we do not know the outcome of that option ;(
2nd is the idea of finding a way of keeping ignorance - ignorant by having an entrance exam to enter the site , at least the OP did put the thread in the beginners heading .
I think that any option to help others learn is a good one .
There are plenty of EE sites that require a degree to use the site and this one never gave me the impression , till now , of this narrow minded concept
Now the normal reaction is to get defensive and take issue with the above - rather than get above all that and try to make things better .
Here's hoping for the high road