#ATTENDANCE QUIZ FOR LECTURE 3 of Dr. Z.'s Math454(02) Rutgers University

# Please Edit this .txt page with Answers

#Email  ShaloshBEkhad@gmail.com 
#Subject: p3
#with an attachment called
#p3FirstLast.txt
#(e.g. p3DoronZeilberger.txt)

#Right after finishing watching the lecture but no later than Sept. 14, 2020, 8:00pm


#Q1. THE FIRST ATTENDANCE QUESTION WAS:
#What is a derangement?

#A1. MY ANSWER TO THE FIRST ATTENDANCE QUESTION IS:
#A derangement is a permutation of the elements of a set, such that no element appears in 
#its original position. Example: For set ABCD, BADC is a derangement. ADBC is not a 
#derangement because A is in its original position, the first spot.


#Q2. THE  SECOND ATTENDANCE QUESTION WAS:
#Give two examples of WtoS and StoW.

#A2. MY ANSWER TO THE  SECOND ATTENDANCE QUESTION IS:

#WtoS

WtoS([1, 1, 1, 1, 0, 1]);
                        #{1, 2, 3, 4, 6}
WtoS([0, 0, 0, 0, 1, 1, 1]);
                           #{5, 6, 7}

#StoW

StoW({2, 4, 6}, 6);
                       #[0, 1, 0, 1, 0, 1]
StoW({1, 2, 3, 4, 5}, 10);
                 #[1, 1, 1, 1, 1, 0, 0, 0, 0, 0]


#Q3. THE  THIRD ATTENDANCE QUESTION WAS:
#I did not see the third attendance question?

#A3. MY ANSWER TO THE  THIRD ATTENDANCE QUESTION IS:
#I'm not sure, I did not see it.