   Chapter 1.1, Problem 14E

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# In Exercises 14 − 35 , prove each statement. A ∩ B ⊆ A ∪ B

To determine

To prove: The statement ABAB.

Explanation

Formula Used:

If A and B are two sets then AB is defined as {x|xAandxB}.

If A and B are two sets then AB is defined as {x|xAorxB}.

Proof:

Consider two sets A and B then AB is defined as {x|xAorxB}.

Let xAB

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