This isn't really a test, just look at it like it's merely a measure of how attentive you are.
Easy, really. They simply ask you to count something um, I'll let them explain because that's the first thing that happens when you click on the clip.

Go ahead, it's short and quite revealing.

http://youtu.be/vJG698U2Mvo
http://youtu.be/vJG698U2Mvo