discrete mathematics
1.
Show that if a | b and b | a, where a and b are
integers, then a = b or a = -b.
//Ex. 5, Page 208.
2.
Show that if a, b, c, and d are integers such that a |
c and b | d, then ab | cd.
//Ex. 6, Page 208.
3.
What are the quotient and remainder when
a) 44 is divided by 8?
b) 777 is divided by 21?
f)...