If the last digit of an acceptable product code is 1, it must be true that the

Why can't Matt's explanation video use the same format as Mehran's??? Clearly Mehran's format is better. With Matt Shiner's, I cannot see the questions, I cannot see the answer options, or the prompt! I have to constantly open and close the video since I need to go back and check the questions and the answers. Mehran's explanation presentation is far better and far friendlier