Have you ever had so much time in your hands that you thought of watching videos in YouTube that can stimulate your mind? Here’s an example video:
Now, before checking the video below for our answer, have you tried to figure out the solution to this test or problem? If you haven’t, that’s OK. I also don’t like to think too much “out of the box.” The video (problem poster) never did publish my comment asking if I had the right solution to it or not though.