Prove: If A, B ⊆ U where U is the universal set, then A ∩ B = A ∪ B.
harshilsharma63 DIY FTW! Joined Jul 2, 2012 Messages 6,430 Oct 7, 2014 #1 Prove: If A, B ⊆ U where U is the universal set, then A ∩ B = A ∪ B.