Smartness

The website that my father owns is basically of mcqs and also contains a book about ISSB (Inter Services Selection Board). Recently a candidate of ISSB called my father. He thanked my father and said that he did very well in the ISSB because of the help he got from the website and the book.
During his interview he gave answers of almost all the questions and that too very efficiently. The Selectors asked from where did he prepared so well. He said that he prepared from the website www.pak.......... .  The Selectors started laughing and told them that they had prepared there questions from the same website :)