# Using a Venn diagram, show that A B if and only if A B = A.

Chapter 24, Review question #18

Using a Venn diagram, show that A ⊆ B if and only if A ∩ B = A.

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## Answers for Questions in Chapter 24

PROBLEM SET 24.1:

PROBLEM SET 24.2:

PROBLEM SET 24.3:

PROBLEM SET 24.4:

PROBLEM SET 24.5:

PROBLEM SET 24.6:

PROBLEM SET 24.7:

PROBLEM SET 24.8:

PROBLEM SET 24.9:

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