Using a Venn diagram, show that if and only if A B if and only if
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Using a Venn diagram, show that if and only if A ⊆ B if and only if A ∪ B = B.
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Enock Oduor
I am a chemist by profession, i coach high school students with their homework, i also do more research during my free time, i attend educational and science fair seminars where i meet students and do some projects.
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