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//Chapter 01: The Foundations: Logic and Proofs

clc;
clear;

mprintf("1.  What time is it? \n")
mprintf("2.  Read this carefully. \n")
mprintf("3.  x+1=2.\n")
mprintf("4.  x+y=Z.\n")
mprintf("Sentences 1 and 2 are not propositions since they are not declarative.\nSentences 3 and 4 are neither true nor false and so they are not propositions.")