[Video] Kyu Hyun and UEE lost to kids in answering Maths question?

On today's Star King,a few kids who are excel in Mathematics were invited to the show.

They were asked to answer a Maths question and all of them managed to answer it correctly.However,Super Junior's Kyu Hyun and After School's UEE were asked to answer it too,however the failed in answering it...

Please enjoy the video here!