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Grade: 12th pass

                        

Use the properties of sets to prove that for all the sets A and B, A – (A ∩ B) = A – B

2 months ago

Answers : (1)

Anand Kumar Pandey
askIITians Faculty
1412 Points
							Welcome to AskIITians

A – (A ∩ B) = A ∩ (A ∩ B)′ (since A – B = A ∩ B′)

= A ∩ (A′ ∪ B′) [by De Morgan’s law)

= (A∩A′) ∪ (A∩ B′) [by distributive law]

= φ ∪ (A ∩ B′)

= A ∩ B′ = A – B

Hence, proved that A – (A ∩ B) = A – B.

Thanks
2 months ago
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