Five mark exercise problems I — task. Mathematics State Board, Class 9.

UPSKILL MATH PLUS

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Verify

$(A \cap B)' = A' \cup B'$ using Venn diagrams.

Proof:

$A \cap B =$

$(A \cap B)' =$

---- (

$1$ )

$A' =$

$B' =$

$A' \cup B' =$

---- (

$2$ )

From equations (

$1$ ) and (

$2$ ), we have

$(A \cap B)' = A' \cup B'$ .

Hence, we proved.

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