## Discrete Mathematics with Applications 4th Edition

Published by Cengage Learning

# Chapter 1 - Speaking Mathematically - Exercise Set 1.2: 1

#### Answer

$A=C$ and $B=D$.

#### Work Step by Step

The sets $A$ and $C$ both contain the elements $a,b,c,d$. The sets $B$ and $D$ both contain the elements $a,c,d,e$. Note that the number of times each element appears and the order of the elements are both irrelevant.

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