#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.
ex. ABCD, a derangement is any arrangement of A, B, C, D such that A is not first, B is not second, C is not third, and D is not fourth.

Q2. THE  SECOND ATTENDANCE QUESTION WAS:

Give two examples of WtoS and StoW

A2. MY ANSWER TO THE  SECOND ATTENDANCE QUESTION IS:

WtoS([1,0,1,0,1]) is {1,3,5}
StoW({1,3,5},4) is [1,0,1,0,1]

WtoS([1,1,0,0]) is {1,2}
StoW({1,2},4) is [1,1,0,0]

Q3. THE  THIRD ATTENDANCE QUESTION WAS:


A3. MY ANSWER TO THE  THIRD ATTENDANCE QUESTION IS: