Q1. THE FIRST ATTENDANCE QUESTION WAS: Who is Gian Carlo Rota A1. MY ANSWER TO THE FIRST ATTENDANCE QUESTION IS: He was an Italian-American mathematician and philosopher. Q2. THE SECOND ATTENDANCE QUESTION WAS: Find the quote of him about how useful pie exists A2. MY ANSWER TO THE SECOND ATTENDANCE QUESTION IS: A mathematician’s work is mostly a tangle of guesswork, analogy, wishful thinking, and frustration. And proof, far from being the core of discovery, is more often than not a way of making sure that our minds are not playing tricks. Q3. THE SECOND ATTENDANCE QUESTION WAS: What does recontres mean in French Who made the problem A3. MY ANSWER TO THE SECOND ATTENDANCE QUESTION IS: Encounter the problem is named after a solitaire game Q4. THE SECOND ATTENDANCE QUESTION WAS: What is the oeis a number of this sequence A4. MY ANSWER TO THE SECOND ATTENDANCE QUESTION IS: A000166