Singer Henry solved a difficult math problem at once.

In MBC "The Real Man" aired today, the members were trained.

After coming back to their dorm, Kim Soo Ro bet his watch and gave a problem to the members.

Seo Kyung Seok, who graduated from Seoul University, had difficulty solving the problem. But Henry, walking in the room, solved it within 10 seconds, shocking everyone.

Photo Credit: MBC