One of a Continuing Series
This site needs some entertainment. I have a series of so-called Quiz Questions, and I will post one from time to time.
I am guessing the problem involves turning over the least number of cards. Post your answer in the comments section below before viewing the video.
Now I have actually viewed the video, and there is an additional proviso I did not state above. That is all cards have a letter on one side and a number on the other side. Now solve the problem with that in mind. It really is easy.
My solution is posted on the Skeptical Analysis site.