Girls’ Generation‘s Sunny has becoming the appellation of ‘Best Brain Idol’ on the latest filming of ‘Invincible Youth 2′. 
 When the casting accustomed for the filming, they were handed out exams  absolute questions on adeptness accomplished in elementary academy (1st  brand through 6th grade). 
 The associates were clumsy to adumbrate their shock as they begin  themselves clumsy to acknowledgment some of the questions on the test,  admitting it getting an elementary academy bookish standards test. 
 However one member, Sunny, seemed unfazed as she calmly apparent through  anniversary botheration – abrogation anybody in awe at her calm access  and adeptness to break through the problems. 
When the exams were graded, abounding of the members’ affidavit were  abounding with blanks and amiss answers. However, Sunny showed her  adeptness to plan through some of the added arduous algebraic  calculations involving fractions, and as a result, accomplished the best  account out of all the members.