> #The number of the quizs is :
> 
;
> 
;
> 
;
> 
;
> #ATTENDANCE QUESTION 1
;
> #WHO WAS GIAN-CARLO ROTA
;
> #Answer := "Gian-Carlo Rota (April 27, 1932 ¨C April 18, 1999) was an Italian-American mathematician and philosopher. He spent most of his career at the Massachusetts Institute of Technology, where he worked in combinatorics, functional analysis, probability theory, and phenomenology."
;
> 
;
> #ATTENDANCE QUESTION 2
;
> #USE THE INTERNET TO FIND THE QUOTE OF ROTA ABOUT HOW USEFUL PIE EXISTS
;
> #Sorry, I didn't find the answer. I found some quotes from your site. Here is one of them.
;
> #It is a common public relations gimmick to give the entire credit for the solution of famous problems #to the one mathematician who is responsible for the last step.
> #It would probably be counterproductive to let it be known that behind every "genius" there lurks a #beehive of research mathematicians who gradually built up to the "final" step in seemingly pointless #research papers. And it would be fatal to let it be known that the showcase problems of mathematics are #of little or no interest for the progress of mathematics. We all know that they are dead ends, #curiosities, good only as confirmation of the effectiveness of theory. What mathematicians privately #celebrate when one of their showcase problems is solved is Polya's adage : "no problem is ever solved #directly".
> #--Gian-Carlo Rota (Foreword to `Species' by Bergeron, Labelle and Leroux)
;
> 
;
> #ATTENDANCE QUESTION 3
;
> #WHAT DOES RENCONTRES MEAN IN FRENCH?
;
> #WHO MADE THE PROBELM UP?
;
> 
;
> #Answer := RECONTRES means "encounter" in French.
;
> #The "Probl¨¨me des rencontres" was first posed by Pierre R¨¦mond de Montmort in 1708, who solved it in 1713, at the same time as Nicolas Bernoulli.
;
> 
;
> 
;
> #ATTENDANCE QUESTION 4
;
> #WHAT IS THE OEIS A NUMBER OF THIS SEQUENCE?
;
> 
;
> #ANSWER := The A number is A000166, the sequence is "Subfactorial or rencontres numbers, or derangements: number of permutations of n elements with no fixed points."
;